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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.00760">arXiv:2409.00760</a> <span> [<a href="https://arxiv.org/pdf/2409.00760">pdf</a>, <a href="https://arxiv.org/format/2409.00760">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> </div> <p class="title is-5 mathjax"> Synthetic-lattice Bloch wave dynamics in a single-mode microwave resonator </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Ahrens%2C+F">F. Ahrens</a>, <a href="/search/cond-mat?searchtype=author&query=Crescini%2C+N">N. Crescini</a>, <a href="/search/cond-mat?searchtype=author&query=Irace%2C+A">A. Irace</a>, <a href="/search/cond-mat?searchtype=author&query=Rastelli%2C+G">G. Rastelli</a>, <a href="/search/cond-mat?searchtype=author&query=Falferi%2C+P">P. Falferi</a>, <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Margesin%2C+B">B. Margesin</a>, <a href="/search/cond-mat?searchtype=author&query=Mezzena%2C+R">R. Mezzena</a>, <a href="/search/cond-mat?searchtype=author&query=Vinante%2C+A">A. Vinante</a>, <a href="/search/cond-mat?searchtype=author&query=Carusotto%2C+I">I. Carusotto</a>, <a href="/search/cond-mat?searchtype=author&query=Mantegazzini%2C+F">F. Mantegazzini</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.00760v2-abstract-short" style="display: inline;"> Frequency-based synthetic dimensions are a promising avenue to extend the dimensionality of photonic systems. In this work, we show how a tilted synthetic lattice is naturally realised by periodically modulating a single-mode resonator under a coherent monochromatic drive. We theoretically study the Bloch wave dynamics in the tilted synthetic lattice, which gives rise to peculiar features in the s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.00760v2-abstract-full').style.display = 'inline'; document.getElementById('2409.00760v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.00760v2-abstract-full" style="display: none;"> Frequency-based synthetic dimensions are a promising avenue to extend the dimensionality of photonic systems. In this work, we show how a tilted synthetic lattice is naturally realised by periodically modulating a single-mode resonator under a coherent monochromatic drive. We theoretically study the Bloch wave dynamics in the tilted synthetic lattice, which gives rise to peculiar features in the spectral distribution of the cavity field. Our predictions are experimentally confirmed using a planar tunable superconducting microwave resonator. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.00760v2-abstract-full').style.display = 'none'; document.getElementById('2409.00760v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 7 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.01185">arXiv:2406.01185</a> <span> [<a href="https://arxiv.org/pdf/2406.01185">pdf</a>, <a href="https://arxiv.org/format/2406.01185">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Superconductivity">cond-mat.supr-con</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.chaos.2024.115598">10.1016/j.chaos.2024.115598 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Driving a Josephson Traveling Wave Parametric Amplifier into chaos: effects of a non-sinusoidal current-phase relation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Guarcello%2C+C">Claudio Guarcello</a>, <a href="/search/cond-mat?searchtype=author&query=Barone%2C+C">Carlo Barone</a>, <a href="/search/cond-mat?searchtype=author&query=Carapella%2C+G">Giovanni Carapella</a>, <a href="/search/cond-mat?searchtype=author&query=Granata%2C+V">Veronica Granata</a>, <a href="/search/cond-mat?searchtype=author&query=Filatrella%2C+G">Giovanni Filatrella</a>, <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">Andrea Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Pagano%2C+S">Sergio Pagano</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.01185v2-abstract-short" style="display: inline;"> In this work, we develop a comprehensive numerical analysis of the dynamic response of a Josephson Traveling Wave Parametric Amplifier (JTWPA) by varying the driving parameters, with a focus on the pathways leading to chaotic behavior. By tuning the working conditions, we capture the broad spectrum of dynamical regimes accessible to JTWPAs, delineating the settings under which transition to chaos… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.01185v2-abstract-full').style.display = 'inline'; document.getElementById('2406.01185v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.01185v2-abstract-full" style="display: none;"> In this work, we develop a comprehensive numerical analysis of the dynamic response of a Josephson Traveling Wave Parametric Amplifier (JTWPA) by varying the driving parameters, with a focus on the pathways leading to chaotic behavior. By tuning the working conditions, we capture the broad spectrum of dynamical regimes accessible to JTWPAs, delineating the settings under which transition to chaos occurs. Furthermore, we extend our investigation to device formed by junctions characterized by a non--sinusoidal current phase relation (CPR) and exploring the impact of its shape on the amplifier's performance. Through the study of gain characteristics, Poincar茅 sections, and Fourier spectra, we provide an in-depth understanding of how non-linearity and CPR nonsinusoidality influence the JTWPAs' operational effectiveness and stability. This investigation offers insights into optimizing the device designs for enhanced performance and robustness against chaotic disruptions, in order to establish a framework for predicting and controlling JTWPA behavior in practical applications. This effort will pave the way for the development of devices with tailored dynamic responses and for advancements in quantum computing and precision measurement technologies, where stability and high fidelity are of paramount importance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.01185v2-abstract-full').style.display = 'none'; document.getElementById('2406.01185v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Chaos, Solitons Fractals, 189, 115598 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.11354">arXiv:2403.11354</a> <span> [<a href="https://arxiv.org/pdf/2403.11354">pdf</a>, <a href="https://arxiv.org/format/2403.11354">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Superconductivity">cond-mat.supr-con</span> </div> </div> <p class="title is-5 mathjax"> Kinetic inductance traveling wave amplifier designs for practical microwave readout applications </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Visser%2C+M">M. Visser</a>, <a href="/search/cond-mat?searchtype=author&query=Wheeler%2C+J">J. Wheeler</a>, <a href="/search/cond-mat?searchtype=author&query=Howe%2C+L">L. Howe</a>, <a href="/search/cond-mat?searchtype=author&query=Gao%2C+J">J. Gao</a>, <a href="/search/cond-mat?searchtype=author&query=Austermann%2C+J">J. Austermann</a>, <a href="/search/cond-mat?searchtype=author&query=Hubmayr%2C+J">J. Hubmayr</a>, <a href="/search/cond-mat?searchtype=author&query=Nucciotti%2C+A">A. Nucciotti</a>, <a href="/search/cond-mat?searchtype=author&query=Ullom%2C+J">J. Ullom</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.11354v3-abstract-short" style="display: inline;"> A Kinetic Inductance Traveling Wave amplifier (KIT) utilizes the nonlinear kinetic inductance of superconducting films, particularly Niobium Titanium Nitride (NbTiN), for parametric amplification. These amplifiers achieve remarkable performance in terms of gain, bandwidth, compression power, and frequently approach the quantum limit for noise. However, most KIT demonstrations have been isolated fr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.11354v3-abstract-full').style.display = 'inline'; document.getElementById('2403.11354v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.11354v3-abstract-full" style="display: none;"> A Kinetic Inductance Traveling Wave amplifier (KIT) utilizes the nonlinear kinetic inductance of superconducting films, particularly Niobium Titanium Nitride (NbTiN), for parametric amplification. These amplifiers achieve remarkable performance in terms of gain, bandwidth, compression power, and frequently approach the quantum limit for noise. However, most KIT demonstrations have been isolated from practical device readout systems. Using a KIT as the first amplifier in the readout chain of an unoptimized microwave SQUID multiplexer coupled to a transition-edge sensor microcalorimeter we see an initial improvement in the flux noise. One challenge in KIT integration is the considerable microwave pump power required to drive the non-linearity. To address this, we have initiated efforts to reduce the pump power by using thinner NbTiN films and an inverted microstrip transmission line design. In this article, we present the new transmission line design, fabrication procedure, and initial device characterization -- including gain and added noise. These devices exhibit over 10 dB of gain with a 3 dB bandwidth of approximately 5.5-7.25 GHz, a maximum practical gain of 12 dB and typical gain ripple under 4 dB peak-to-peak. We observe an appreciable impedance mismatch in the NbTiN transmission line, which is likely the source of the majority of the gain ripple. Finally we perform an initial noise characterization and demonstrate system-added noise of three quanta or less over nearly the entire 3 dB bandwidth. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.11354v3-abstract-full').style.display = 'none'; document.getElementById('2403.11354v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.01597">arXiv:2403.01597</a> <span> [<a href="https://arxiv.org/pdf/2403.01597">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Superconductivity">cond-mat.supr-con</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/TASC.2024.3367615">10.1109/TASC.2024.3367615 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nonlinear Behavior of Josephson Traveling Wave Parametric Amplifiers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Guarcello%2C+C">Claudio Guarcello</a>, <a href="/search/cond-mat?searchtype=author&query=Ahrens%2C+F">Felix Ahrens</a>, <a href="/search/cond-mat?searchtype=author&query=Avallone%2C+G">Guerino Avallone</a>, <a href="/search/cond-mat?searchtype=author&query=Barone%2C+C">Carlo Barone</a>, <a href="/search/cond-mat?searchtype=author&query=Borghesi%2C+M">Matteo Borghesi</a>, <a href="/search/cond-mat?searchtype=author&query=Callegaro%2C+L">Luca Callegaro</a>, <a href="/search/cond-mat?searchtype=author&query=Carapella%2C+G">Giovanni Carapella</a>, <a href="/search/cond-mat?searchtype=author&query=Caricato%2C+A+P">Anna Paola Caricato</a>, <a href="/search/cond-mat?searchtype=author&query=Carusotto%2C+I">Iacopo Carusotto</a>, <a href="/search/cond-mat?searchtype=author&query=Cian%2C+A">Alessandro Cian</a>, <a href="/search/cond-mat?searchtype=author&query=D%27Elia%2C+A">Alessandro D'Elia</a>, <a href="/search/cond-mat?searchtype=author&query=Di+Gioacchino%2C+D">Daniele Di Gioacchino</a>, <a href="/search/cond-mat?searchtype=author&query=Enrico%2C+E">Emanuele Enrico</a>, <a href="/search/cond-mat?searchtype=author&query=Falferi%2C+P">Paolo Falferi</a>, <a href="/search/cond-mat?searchtype=author&query=Fasolo%2C+L">Luca Fasolo</a>, <a href="/search/cond-mat?searchtype=author&query=Faverzani%2C+M">Marco Faverzani</a>, <a href="/search/cond-mat?searchtype=author&query=Ferri%2C+E">Elena Ferri</a>, <a href="/search/cond-mat?searchtype=author&query=Filatrella%2C+G">Giovanni Filatrella</a>, <a href="/search/cond-mat?searchtype=author&query=Gatti%2C+C">Claudio Gatti</a>, <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">Andrea Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Giubertoni%2C+D">Damiano Giubertoni</a>, <a href="/search/cond-mat?searchtype=author&query=Granata%2C+V">Veronica Granata</a>, <a href="/search/cond-mat?searchtype=author&query=Leo%2C+A">Angelo Leo</a>, <a href="/search/cond-mat?searchtype=author&query=Labranca%2C+D">Danilo Labranca</a>, <a href="/search/cond-mat?searchtype=author&query=Ligi%2C+C">Carlo Ligi</a> , et al. (18 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.01597v1-abstract-short" style="display: inline;"> Recent advancements in quantum technologies and advanced detection experiments have underscored the pressing need for the detection of exceedingly weak signals within the microwave frequency spectrum. Addressing this challenge, the Josephson Traveling Wave Parametric Amplifier (JTWPA) has been proposed as a cryogenic front-end amplifier capable of approaching the quantum noise limit while providin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.01597v1-abstract-full').style.display = 'inline'; document.getElementById('2403.01597v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.01597v1-abstract-full" style="display: none;"> Recent advancements in quantum technologies and advanced detection experiments have underscored the pressing need for the detection of exceedingly weak signals within the microwave frequency spectrum. Addressing this challenge, the Josephson Traveling Wave Parametric Amplifier (JTWPA) has been proposed as a cryogenic front-end amplifier capable of approaching the quantum noise limit while providing a relevant bandwidth. This research is centered on a comprehensive numerical investigation of the JTWPA, without resorting to simplifications regarding the nonlinearity of the essential components. Specifically, this study focuses on a thorough examination of the system, characterized by coupled nonlinear differential equations representing all components of the device. Proper input and output signals at the device's boundaries are considered. The analysis of the output signals undergoing the parametric amplification process involves a detailed exploration of phase-space dynamics and Fourier spectral analysis of the output voltage. This study is conducted while considering the parameters ruling the response of the device under pump and signal excitations. In addition to the expected signal amplification, the findings reveal that the nonlinear nature of the system can give rise to unforeseen phenomena, depending on the system's operational conditions, which include: the generation of pump tone harmonics, modulation of the signal gain, and incommensurate frequency generation-effects that are not easily accommodated by simplistic linearized approaches <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.01597v1-abstract-full').style.display = 'none'; document.getElementById('2403.01597v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 4 figures, DARTWARS project - INFN (Italy)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> IEEE TAS, 34 (3), 1, 1701105 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.11720">arXiv:2402.11720</a> <span> [<a href="https://arxiv.org/pdf/2402.11720">pdf</a>, <a href="https://arxiv.org/format/2402.11720">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Superconductivity">cond-mat.supr-con</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/TASC.2023.3253069">10.1109/TASC.2023.3253069 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Characterization of NbTiN films with thicknesses below 20 nm for low power kinetic inductance amplifiers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Vissers%2C+M+R">M. R. Vissers</a>, <a href="/search/cond-mat?searchtype=author&query=Wheeler%2C+J+D">J. D. Wheeler</a>, <a href="/search/cond-mat?searchtype=author&query=Malnou%2C+M">M. Malnou</a>, <a href="/search/cond-mat?searchtype=author&query=Austermann%2C+J+E">J. E. Austermann</a>, <a href="/search/cond-mat?searchtype=author&query=Hubmayr%2C+J">J. Hubmayr</a>, <a href="/search/cond-mat?searchtype=author&query=Nucciotti%2C+A">A. Nucciotti</a>, <a href="/search/cond-mat?searchtype=author&query=Ullom%2C+J+N">J. N. Ullom</a>, <a href="/search/cond-mat?searchtype=author&query=Gao%2C+J">J. Gao</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2402.11720v1-abstract-short" style="display: inline;"> A quantum-limited amplification chain is a fundamental advantage for any application that may benefit from the detection of very faint signals. Reading out arrays of superconducting detectors (TESs or MKIDs), resonant cavities, or qubits, calls for large bandwidth amplifiers in addition to having the lowest possible noise. At millikelvin temperatures, Kinetic Inductance Traveling-Wave Parametric A… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.11720v1-abstract-full').style.display = 'inline'; document.getElementById('2402.11720v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.11720v1-abstract-full" style="display: none;"> A quantum-limited amplification chain is a fundamental advantage for any application that may benefit from the detection of very faint signals. Reading out arrays of superconducting detectors (TESs or MKIDs), resonant cavities, or qubits, calls for large bandwidth amplifiers in addition to having the lowest possible noise. At millikelvin temperatures, Kinetic Inductance Traveling-Wave Parametric Amplifiers (KI-TWPAs) working in 3-wave-mixing (3WM) and fabricated from a 20 nm thick NbTiN film have shown promising noise performances, as they can operate close to the quantum limit. However, they still require fairly high pump power. Devices that would require lower pump power would be easier to implement in readout chains, could reach the quantum limit and they would be compatible with qubit readout. A possible solution for obtaining this optimal configuration is to use a thinner superconducting film. In this work we explore the properties of NbTiN films with a thickness less than 20 nm and we report the obtained experimental characterizations in terms of critical temperature, normal resistivity, and kinetic inductance. A new design for a 3WM KI-TWPA amplifier, based on these developed superconducting films, is introduced and discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.11720v1-abstract-full').style.display = 'none'; document.getElementById('2402.11720v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.10101">arXiv:2208.10101</a> <span> [<a href="https://arxiv.org/pdf/2208.10101">pdf</a>, <a href="https://arxiv.org/format/2208.10101">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Superconductivity">cond-mat.supr-con</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2022.167745">10.1016/j.nima.2022.167745 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Progress in the development of a KITWPA for the DARTWARS project </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Borghesi%2C+M">M. Borghesi</a>, <a href="/search/cond-mat?searchtype=author&query=Barone%2C+C">C. Barone</a>, <a href="/search/cond-mat?searchtype=author&query=Capelli%2C+S">S. Capelli</a>, <a href="/search/cond-mat?searchtype=author&query=Carapella%2C+G">G. Carapella</a>, <a href="/search/cond-mat?searchtype=author&query=Caricato%2C+A+P">A. P. Caricato</a>, <a href="/search/cond-mat?searchtype=author&query=Carusotto%2C+I">I. Carusotto</a>, <a href="/search/cond-mat?searchtype=author&query=Cian%2C+A">A. Cian</a>, <a href="/search/cond-mat?searchtype=author&query=Di+Gioacchino%2C+D">D. Di Gioacchino</a>, <a href="/search/cond-mat?searchtype=author&query=Enrico%2C+E">E. Enrico</a>, <a href="/search/cond-mat?searchtype=author&query=Falferi%2C+P">P. Falferi</a>, <a href="/search/cond-mat?searchtype=author&query=Fasolo%2C+L">L. Fasolo</a>, <a href="/search/cond-mat?searchtype=author&query=Faverzani%2C+M">M. Faverzani</a>, <a href="/search/cond-mat?searchtype=author&query=Ferri%2C+E">E. Ferri</a>, <a href="/search/cond-mat?searchtype=author&query=Filatrella%2C+G">G. Filatrella</a>, <a href="/search/cond-mat?searchtype=author&query=Gatti%2C+C">C. Gatti</a>, <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Giubertoni%2C+D">D. Giubertoni</a>, <a href="/search/cond-mat?searchtype=author&query=Granata%2C+V">V. Granata</a>, <a href="/search/cond-mat?searchtype=author&query=Greco%2C+A">A. Greco</a>, <a href="/search/cond-mat?searchtype=author&query=Guarcello%2C+C">C. Guarcello</a>, <a href="/search/cond-mat?searchtype=author&query=Labranca%2C+D">D. Labranca</a>, <a href="/search/cond-mat?searchtype=author&query=Leo%2C+A">A. Leo</a>, <a href="/search/cond-mat?searchtype=author&query=Ligi%2C+C">C. Ligi</a>, <a href="/search/cond-mat?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/cond-mat?searchtype=author&query=Mantegazzini%2C+F">F. Mantegazzini</a> , et al. (16 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2208.10101v2-abstract-short" style="display: inline;"> DARTWARS (Detector Array Readout with Traveling Wave AmplifieRS) is a three years project that aims to develop high-performing innovative Traveling Wave Parametric Amplifiers (TWPAs) for low temperature detectors and qubit readout (C-band). The practical development follows two different promising approaches, one based on the Josephson junctions (TWJPA) and the other one based on the kinetic induc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.10101v2-abstract-full').style.display = 'inline'; document.getElementById('2208.10101v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.10101v2-abstract-full" style="display: none;"> DARTWARS (Detector Array Readout with Traveling Wave AmplifieRS) is a three years project that aims to develop high-performing innovative Traveling Wave Parametric Amplifiers (TWPAs) for low temperature detectors and qubit readout (C-band). The practical development follows two different promising approaches, one based on the Josephson junctions (TWJPA) and the other one based on the kinetic inductance of a high-resistivity superconductor (KITWPA). This paper presents the advancements made by the DARTWARS collaboration to produce a first working prototype of a KITWPA. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.10101v2-abstract-full').style.display = 'none'; document.getElementById('2208.10101v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">3 pages, 4 figures. Proceeding of Pisa15th Meeting conference</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.11228">arXiv:2203.11228</a> <span> [<a href="https://arxiv.org/pdf/2203.11228">pdf</a>, <a href="https://arxiv.org/format/2203.11228">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Other Condensed Matter">cond-mat.other</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.106.053002">10.1103/PhysRevD.106.053002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Heisenberg's uncertainty principle in the PTOLEMY project: a theory update </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=PTOLEMY+Collaboration"> PTOLEMY Collaboration</a>, <a href="/search/cond-mat?searchtype=author&query=Apponi%2C+A">A. Apponi</a>, <a href="/search/cond-mat?searchtype=author&query=Betti%2C+M+G">M. G. Betti</a>, <a href="/search/cond-mat?searchtype=author&query=Borghesi%2C+M">M. Borghesi</a>, <a href="/search/cond-mat?searchtype=author&query=Boyarsky%2C+A">A. Boyarsky</a>, <a href="/search/cond-mat?searchtype=author&query=Canci%2C+N">N. Canci</a>, <a href="/search/cond-mat?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/cond-mat?searchtype=author&query=Chang%2C+C">C. Chang</a>, <a href="/search/cond-mat?searchtype=author&query=Cheianov%2C+V">V. Cheianov</a>, <a href="/search/cond-mat?searchtype=author&query=Cheipesh%2C+Y">Y. Cheipesh</a>, <a href="/search/cond-mat?searchtype=author&query=Chung%2C+W">W. Chung</a>, <a href="/search/cond-mat?searchtype=author&query=Cocco%2C+A+G">A. G. Cocco</a>, <a href="/search/cond-mat?searchtype=author&query=Colijn%2C+A+P">A. P. Colijn</a>, <a href="/search/cond-mat?searchtype=author&query=D%27Ambrosio%2C+N">N. D'Ambrosio</a>, <a href="/search/cond-mat?searchtype=author&query=de+Groot%2C+N">N. de Groot</a>, <a href="/search/cond-mat?searchtype=author&query=Esposito%2C+A">A. Esposito</a>, <a href="/search/cond-mat?searchtype=author&query=Faverzani%2C+M">M. Faverzani</a>, <a href="/search/cond-mat?searchtype=author&query=Ferella%2C+A">A. Ferella</a>, <a href="/search/cond-mat?searchtype=author&query=Ferri%2C+E">E. Ferri</a>, <a href="/search/cond-mat?searchtype=author&query=Ficcadenti%2C+L">L. Ficcadenti</a>, <a href="/search/cond-mat?searchtype=author&query=Frederico%2C+T">T. Frederico</a>, <a href="/search/cond-mat?searchtype=author&query=Gariazzo%2C+S">S. Gariazzo</a>, <a href="/search/cond-mat?searchtype=author&query=Gatti%2C+F">F. Gatti</a>, <a href="/search/cond-mat?searchtype=author&query=Gentile%2C+C">C. Gentile</a>, <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a> , et al. (36 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.11228v2-abstract-short" style="display: inline;"> We discuss the consequences of the quantum uncertainty on the spectrum of the electron emitted by the $尾$-processes of a tritium atom bound to a graphene sheet. We analyze quantitatively the issue recently raised in [Cheipesh et al., Phys. Rev. D 104, 116004 (2021)], and discuss the relevant time scales and the degrees of freedom that can contribute to the intrinsic spread in the electron energy.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.11228v2-abstract-full').style.display = 'inline'; document.getElementById('2203.11228v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.11228v2-abstract-full" style="display: none;"> We discuss the consequences of the quantum uncertainty on the spectrum of the electron emitted by the $尾$-processes of a tritium atom bound to a graphene sheet. We analyze quantitatively the issue recently raised in [Cheipesh et al., Phys. Rev. D 104, 116004 (2021)], and discuss the relevant time scales and the degrees of freedom that can contribute to the intrinsic spread in the electron energy. We perform careful calculations of the potential between tritium and graphene with different coverages and geometries. With this at hand, we propose possible avenues to mitigate the effect of the quantum uncertainty. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.11228v2-abstract-full').style.display = 'none'; document.getElementById('2203.11228v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D 106 (2022) 5, 053002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.01512">arXiv:2111.01512</a> <span> [<a href="https://arxiv.org/pdf/2111.01512">pdf</a>, <a href="https://arxiv.org/format/2111.01512">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Superconductivity">cond-mat.supr-con</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s10909-022-02809-6">10.1007/s10909-022-02809-6 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Detector Array Readout with Traveling Wave Amplifiers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Barone%2C+C">C. Barone</a>, <a href="/search/cond-mat?searchtype=author&query=Borghesi%2C+M">M. Borghesi</a>, <a href="/search/cond-mat?searchtype=author&query=Carapella%2C+G">G. Carapella</a>, <a href="/search/cond-mat?searchtype=author&query=Caricato%2C+A+P">A. P. Caricato</a>, <a href="/search/cond-mat?searchtype=author&query=Carusotto%2C+I">I. Carusotto</a>, <a href="/search/cond-mat?searchtype=author&query=Chang%2C+W">W. Chang</a>, <a href="/search/cond-mat?searchtype=author&query=Cian%2C+A">A. Cian</a>, <a href="/search/cond-mat?searchtype=author&query=Di+Gioacchino%2C+D">D. Di Gioacchino</a>, <a href="/search/cond-mat?searchtype=author&query=Enrico%2C+E">E. Enrico</a>, <a href="/search/cond-mat?searchtype=author&query=Falferi%2C+P">P. Falferi</a>, <a href="/search/cond-mat?searchtype=author&query=Fasolo%2C+L">L. Fasolo</a>, <a href="/search/cond-mat?searchtype=author&query=Faverzani%2C+M">M. Faverzani</a>, <a href="/search/cond-mat?searchtype=author&query=Ferri%2C+E">E. Ferri</a>, <a href="/search/cond-mat?searchtype=author&query=Filatrella%2C+G">G. Filatrella</a>, <a href="/search/cond-mat?searchtype=author&query=Gatti%2C+C">C. Gatti</a>, <a href="/search/cond-mat?searchtype=author&query=Giubertoni%2C+D">D. Giubertoni</a>, <a href="/search/cond-mat?searchtype=author&query=Greco%2C+A">A. Greco</a>, <a href="/search/cond-mat?searchtype=author&query=Kutlu%2C+C">C. Kutlu</a>, <a href="/search/cond-mat?searchtype=author&query=Leo%2C+A">A. Leo</a>, <a href="/search/cond-mat?searchtype=author&query=Ligi%2C+C">C. Ligi</a>, <a href="/search/cond-mat?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/cond-mat?searchtype=author&query=Margesin%2C+B">B. Margesin</a>, <a href="/search/cond-mat?searchtype=author&query=Maruccio%2C+G">G. Maruccio</a>, <a href="/search/cond-mat?searchtype=author&query=Matlashov%2C+A">A. Matlashov</a> , et al. (13 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.01512v1-abstract-short" style="display: inline;"> Noise at the quantum limit over a large bandwidth is a fundamental requirement for future applications operating at millikelvin temperatures, such as the neutrino mass measurement, the next-generation x-ray observatory, the CMB measurement, the dark matter and axion detection, and the rapid high-fidelity readout of superconducting qubits. The read out sensitivity of arrays of microcalorimeter dete… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.01512v1-abstract-full').style.display = 'inline'; document.getElementById('2111.01512v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.01512v1-abstract-full" style="display: none;"> Noise at the quantum limit over a large bandwidth is a fundamental requirement for future applications operating at millikelvin temperatures, such as the neutrino mass measurement, the next-generation x-ray observatory, the CMB measurement, the dark matter and axion detection, and the rapid high-fidelity readout of superconducting qubits. The read out sensitivity of arrays of microcalorimeter detectors, resonant axion-detectors, and qubits, is currently limited by the noise temperature and bandwidth of the cryogenic amplifiers. The DARTWARS (Detector Array Readout with Traveling Wave AmplifieRS) project has the goal of developing high-performing innovative traveling wave parametric amplifiers (TWPAs) with a high gain, a high saturation power, and a quantum-limited or nearly quantum-limited noise. The practical development follows two different promising approaches, one based on the Josephson junctions and the other one based on the kinetic inductance of a high-resistivity superconductor. In this contribution we present the aims of the project, the adopted design solutions and preliminary results from simulations and measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.01512v1-abstract-full').style.display = 'none'; document.getElementById('2111.01512v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2109.14924">arXiv:2109.14924</a> <span> [<a href="https://arxiv.org/pdf/2109.14924">pdf</a>, <a href="https://arxiv.org/format/2109.14924">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Superconductivity">cond-mat.supr-con</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/TASC.2022.3148692">10.1109/TASC.2022.3148692 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Bimodal Approach for Noise Figures of Merit Evaluation in Quantum-Limited Josephson Traveling Wave Parametric Amplifiers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Fasolo%2C+L">L. Fasolo</a>, <a href="/search/cond-mat?searchtype=author&query=Barone%2C+C">C. Barone</a>, <a href="/search/cond-mat?searchtype=author&query=Borghesi%2C+M">M. Borghesi</a>, <a href="/search/cond-mat?searchtype=author&query=Carapella%2C+G">G. Carapella</a>, <a href="/search/cond-mat?searchtype=author&query=Caricato%2C+A+P">A. P. Caricato</a>, <a href="/search/cond-mat?searchtype=author&query=Carusotto%2C+I">I. Carusotto</a>, <a href="/search/cond-mat?searchtype=author&query=Chung%2C+W">W. Chung</a>, <a href="/search/cond-mat?searchtype=author&query=Cian%2C+A">A. Cian</a>, <a href="/search/cond-mat?searchtype=author&query=Di+Gioacchino%2C+D">D. Di Gioacchino</a>, <a href="/search/cond-mat?searchtype=author&query=Enrico%2C+E">E. Enrico</a>, <a href="/search/cond-mat?searchtype=author&query=Falferi%2C+P">P. Falferi</a>, <a href="/search/cond-mat?searchtype=author&query=Faverzani%2C+M">M. Faverzani</a>, <a href="/search/cond-mat?searchtype=author&query=Ferri%2C+E">E. Ferri</a>, <a href="/search/cond-mat?searchtype=author&query=Filatrella%2C+G">G. Filatrella</a>, <a href="/search/cond-mat?searchtype=author&query=Gatti%2C+C">C. Gatti</a>, <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Giubertoni%2C+D">D. Giubertoni</a>, <a href="/search/cond-mat?searchtype=author&query=Greco%2C+A">A. Greco</a>, <a href="/search/cond-mat?searchtype=author&query=Kutlu%2C+C">C. Kutlu</a>, <a href="/search/cond-mat?searchtype=author&query=Leo%2C+A">A. Leo</a>, <a href="/search/cond-mat?searchtype=author&query=Ligi%2C+C">C. Ligi</a>, <a href="/search/cond-mat?searchtype=author&query=Livreri%2C+P">P. Livreri</a>, <a href="/search/cond-mat?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/cond-mat?searchtype=author&query=Margesin%2C+B">B. Margesin</a>, <a href="/search/cond-mat?searchtype=author&query=Maruccio%2C+G">G. Maruccio</a> , et al. (15 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2109.14924v2-abstract-short" style="display: inline;"> The advent of ultra-low noise microwave amplifiers revolutionized several research fields demanding quantum-limited technologies. Exploiting a theoretical bimodal description of a linear phase-preserving amplifier, in this contribution we analyze some of the intrinsic properties of a model architecture (i.e., an rf-SQUID based Josephson Traveling Wave Parametric Amplifier) in terms of amplificatio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.14924v2-abstract-full').style.display = 'inline'; document.getElementById('2109.14924v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2109.14924v2-abstract-full" style="display: none;"> The advent of ultra-low noise microwave amplifiers revolutionized several research fields demanding quantum-limited technologies. Exploiting a theoretical bimodal description of a linear phase-preserving amplifier, in this contribution we analyze some of the intrinsic properties of a model architecture (i.e., an rf-SQUID based Josephson Traveling Wave Parametric Amplifier) in terms of amplification and noise generation for key case study input states (Fock and coherents). Furthermore, we present an analysis of the output signals generated by the parametric amplification mechanism when thermal noise fluctuations feed the device. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.14924v2-abstract-full').style.display = 'none'; document.getElementById('2109.14924v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.05237">arXiv:1509.05237</a> <span> [<a href="https://arxiv.org/pdf/1509.05237">pdf</a>, <a href="https://arxiv.org/format/1509.05237">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Superconductivity">cond-mat.supr-con</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s10909-015-1441-4">10.1007/s10909-015-1441-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Development of microwave superconducting microresonators for neutrino mass measurement in the HOLMES framework </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Day%2C+P+K">P. K. Day</a>, <a href="/search/cond-mat?searchtype=author&query=Falferi%2C+P">P. Falferi</a>, <a href="/search/cond-mat?searchtype=author&query=Faverzani%2C+M">M. Faverzani</a>, <a href="/search/cond-mat?searchtype=author&query=Ferri%2C+E">E. Ferri</a>, <a href="/search/cond-mat?searchtype=author&query=Giordano%2C+C">C. Giordano</a>, <a href="/search/cond-mat?searchtype=author&query=Maino%2C+M">M. Maino</a>, <a href="/search/cond-mat?searchtype=author&query=Margesin%2C+B">B. Margesin</a>, <a href="/search/cond-mat?searchtype=author&query=Mezzena%2C+R">R. Mezzena</a>, <a href="/search/cond-mat?searchtype=author&query=Nizzolo%2C+R">R. Nizzolo</a>, <a href="/search/cond-mat?searchtype=author&query=Nucciotti%2C+A">A. Nucciotti</a>, <a href="/search/cond-mat?searchtype=author&query=Puiu%2C+A">A. Puiu</a>, <a href="/search/cond-mat?searchtype=author&query=Zanetti%2C+L">L. Zanetti</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1509.05237v3-abstract-short" style="display: inline;"> The European Research Council has recently funded HOLMES, a project with the aim of performing a calorimetric measurement of the electron neutrino mass measuring the energy released in the electron capture decay of 163Ho. The baseline for HOLMES are microcalorimeters coupled to Transition Edge Sensors (TESs) read out with rf-SQUIDs, for microwave multiplexing purposes. A promising alternative solu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.05237v3-abstract-full').style.display = 'inline'; document.getElementById('1509.05237v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.05237v3-abstract-full" style="display: none;"> The European Research Council has recently funded HOLMES, a project with the aim of performing a calorimetric measurement of the electron neutrino mass measuring the energy released in the electron capture decay of 163Ho. The baseline for HOLMES are microcalorimeters coupled to Transition Edge Sensors (TESs) read out with rf-SQUIDs, for microwave multiplexing purposes. A promising alternative solution is based on superconducting microwave resonators, that have undergone rapid development in the last decade. These detectors, called Microwave Kinetic Inductance Detectors (MKIDs), are inherently multiplexed in the frequency domain and suitable for even larger-scale pixel arrays, with theoretical high energy resolution and fast response. The aim of our activity is to develop arrays of microresonator detectors for X-ray spectroscopy and suitable for the calorimetric measurement of the energy spectra of 163Ho. Superconductive multilayer films composed by a sequence of pure Titanium and stoichiometric TiN layers show many ideal properties for MKIDs, such as low loss, large sheet resistance, large kinetic inductance, and tunable critical temperature $T_c$. We developed Ti/TiN multilayer microresonators with $T_c$ within the range from 70 mK to 4.5 K and with good uniformity. In this contribution we present the design solutions adopted, the fabrication processes and the characterization results. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.05237v3-abstract-full').style.display = 'none'; document.getElementById('1509.05237v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 January, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2015. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1307.3781">arXiv:1307.3781</a> <span> [<a href="https://arxiv.org/pdf/1307.3781">pdf</a>, <a href="https://arxiv.org/ps/1307.3781">ps</a>, <a href="https://arxiv.org/format/1307.3781">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Superconductivity">cond-mat.supr-con</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s10909-013-1078-0">10.1007/s10909-013-1078-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Critical Temperature tuning of Ti/TiN multilayer films suitable for low temperature detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Day%2C+P">P. Day</a>, <a href="/search/cond-mat?searchtype=author&query=Falferi%2C+P">P. Falferi</a>, <a href="/search/cond-mat?searchtype=author&query=Faverzani%2C+M">M. Faverzani</a>, <a href="/search/cond-mat?searchtype=author&query=Ferri%2C+E">E. Ferri</a>, <a href="/search/cond-mat?searchtype=author&query=Giordano%2C+C">C. Giordano</a>, <a href="/search/cond-mat?searchtype=author&query=Marghesin%2C+B">B. Marghesin</a>, <a href="/search/cond-mat?searchtype=author&query=Mattedi%2C+F">F. Mattedi</a>, <a href="/search/cond-mat?searchtype=author&query=Mezzena%2C+R">R. Mezzena</a>, <a href="/search/cond-mat?searchtype=author&query=Nizzolo%2C+R">R. Nizzolo</a>, <a href="/search/cond-mat?searchtype=author&query=Nucciotti%2C+A">A. Nucciotti</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1307.3781v2-abstract-short" style="display: inline;"> We present our current progress on the design and test of Ti/TiN Multilayer for use in Kinetic Inductance Detectors (KIDs). Sensors based on sub-stoichiometric TiN film are commonly used in several applications. However, it is difficult to control the targeted critical temperature $T_C$, to maintain precise control of the nitrogen incorporation process and to obtain a production uniformity. To avo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.3781v2-abstract-full').style.display = 'inline'; document.getElementById('1307.3781v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1307.3781v2-abstract-full" style="display: none;"> We present our current progress on the design and test of Ti/TiN Multilayer for use in Kinetic Inductance Detectors (KIDs). Sensors based on sub-stoichiometric TiN film are commonly used in several applications. However, it is difficult to control the targeted critical temperature $T_C$, to maintain precise control of the nitrogen incorporation process and to obtain a production uniformity. To avoid these problems we investigated multilayer Ti/TiN films that show a high uniformity coupled with high quality factor, kinetic inductance and inertness of TiN. These features are ideal to realize superconductive microresonator detectors for astronomical instruments application but also for the field of neutrino physics. Using pure Ti and stoichiometric TiN, we developed and tested different multilayer configuration, in term of number of Ti/TiN layers and in term of different interlayer thicknesses. The target was to reach a critical temperature $T_C$ around $(1梅1.5)$ K in order to have a low energy gap and slower recombination time (i.e. low generation-recombination noise). The results prove that the superconductive transition can be tuned in the $(0.5梅4.6)$ K temperature range properly choosing the Ti thickness in the $(0梅15)$ nm range, and the TiN thickness in the $(5梅100)$ nm range <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.3781v2-abstract-full').style.display = 'none'; document.getElementById('1307.3781v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 November, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2013. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1005.3686">arXiv:1005.3686</a> <span> [<a href="https://arxiv.org/pdf/1005.3686">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.jcrysgro.2010.06.034">10.1016/j.jcrysgro.2010.06.034 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Production of high purity TeO2 single crystals for the study of neutrinoless double beta decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Arnaboldi%2C+C">C. Arnaboldi</a>, <a href="/search/cond-mat?searchtype=author&query=Brofferio%2C+C">C. Brofferio</a>, <a href="/search/cond-mat?searchtype=author&query=Bryant%2C+A">A. Bryant</a>, <a href="/search/cond-mat?searchtype=author&query=Bucci%2C+C">C. Bucci</a>, <a href="/search/cond-mat?searchtype=author&query=Canonica%2C+L">L. Canonica</a>, <a href="/search/cond-mat?searchtype=author&query=Capelli%2C+S">S. Capelli</a>, <a href="/search/cond-mat?searchtype=author&query=Carrettoni%2C+M">M. Carrettoni</a>, <a href="/search/cond-mat?searchtype=author&query=Clemenza%2C+M">M. Clemenza</a>, <a href="/search/cond-mat?searchtype=author&query=Dafinei%2C+I">I. Dafinei</a>, <a href="/search/cond-mat?searchtype=author&query=Di+Domizio%2C+S">S. Di Domizio</a>, <a href="/search/cond-mat?searchtype=author&query=Ferroni%2C+F">F. Ferroni</a>, <a href="/search/cond-mat?searchtype=author&query=Fiorini%2C+E">E. Fiorini</a>, <a href="/search/cond-mat?searchtype=author&query=Ge%2C+Z">Z. Ge</a>, <a href="/search/cond-mat?searchtype=author&query=Giachero%2C+A">A. Giachero</a>, <a href="/search/cond-mat?searchtype=author&query=Gironi%2C+L">L. Gironi</a>, <a href="/search/cond-mat?searchtype=author&query=Giuliani%2C+A">A. Giuliani</a>, <a href="/search/cond-mat?searchtype=author&query=Gorla%2C+P">P. Gorla</a>, <a href="/search/cond-mat?searchtype=author&query=Guardincerri%2C+E">E. Guardincerri</a>, <a href="/search/cond-mat?searchtype=author&query=Kadel%2C+R">R. Kadel</a>, <a href="/search/cond-mat?searchtype=author&query=Kazkaz%2C+K">K. Kazkaz</a>, <a href="/search/cond-mat?searchtype=author&query=Kogler%2C+L">L. Kogler</a>, <a href="/search/cond-mat?searchtype=author&query=Kolomensky%2C+Y">Y. Kolomensky</a>, <a href="/search/cond-mat?searchtype=author&query=Larsen%2C+J">J. Larsen</a>, <a href="/search/cond-mat?searchtype=author&query=Laubenstein%2C+M">M. Laubenstein</a>, <a href="/search/cond-mat?searchtype=author&query=Li%2C+Y">Y. Li</a> , et al. (21 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1005.3686v1-abstract-short" style="display: inline;"> High purity TeO2 crystals are produced to be used for the search for the neutrinoless double beta decay of 130Te. Dedicated production lines for raw material synthesis, crystal growth and surface processing were built compliant with radio-purity constraints specific to rare event physics experiments. High sensitivity measurements of radio-isotope concentrations in raw materials, reactants, consuma… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.3686v1-abstract-full').style.display = 'inline'; document.getElementById('1005.3686v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1005.3686v1-abstract-full" style="display: none;"> High purity TeO2 crystals are produced to be used for the search for the neutrinoless double beta decay of 130Te. Dedicated production lines for raw material synthesis, crystal growth and surface processing were built compliant with radio-purity constraints specific to rare event physics experiments. High sensitivity measurements of radio-isotope concentrations in raw materials, reactants, consumables, ancillaries and intermediary products used for TeO2 crystals production are reported. Production and certification protocols are presented and resulting ready-to-use TeO2 crystals are described. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.3686v1-abstract-full').style.display = 'none'; document.getElementById('1005.3686v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 May, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2010. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 5 figures, 3 tables</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns 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