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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/2408.01735">arXiv:2408.01735</a> <span> [<a href="https://arxiv.org/pdf/2408.01735">pdf</a>, <a href="https://arxiv.org/format/2408.01735">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="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> </div> </div> <p class="title is-5 mathjax"> Something from Nothing: A Theoretical Framework for Enhancing or Enabling Cooling of a Mechanical Resonator via the anti-Stokes or Stokes Interaction and Zero-Photon Detection </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Clarke%2C+J">Jack Clarke</a>, <a href="/search/physics?searchtype=author&query=Cryer-Jenkins%2C+E+A">Evan A. Cryer-Jenkins</a>, <a href="/search/physics?searchtype=author&query=Gupta%2C+A">Arjun Gupta</a>, <a href="/search/physics?searchtype=author&query=Major%2C+K+D">Kyle D. Major</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+J">Jinglei Zhang</a>, <a href="/search/physics?searchtype=author&query=Enzian%2C+G">Georg Enzian</a>, <a href="/search/physics?searchtype=author&query=Szczykulska%2C+M">Magdalena Szczykulska</a>, <a href="/search/physics?searchtype=author&query=Leung%2C+A+C">Anthony C. Leung</a>, <a href="/search/physics?searchtype=author&query=Rathee%2C+H">Harsh Rathee</a>, <a href="/search/physics?searchtype=author&query=Svela%2C+A+%C3%98">Andreas 脴. Svela</a>, <a href="/search/physics?searchtype=author&query=Tan%2C+A+K+C">Anthony K. C. Tan</a>, <a href="/search/physics?searchtype=author&query=Beige%2C+A">Almut Beige</a>, <a href="/search/physics?searchtype=author&query=M%C3%B8lmer%2C+K">Klaus M酶lmer</a>, <a href="/search/physics?searchtype=author&query=Vanner%2C+M+R">Michael R. Vanner</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="2408.01735v2-abstract-short" style="display: inline;"> We develop a theoretical framework to describe how zero-photon detection may be utilized to enhance laser cooling via the anti-Stokes interaction and, somewhat surprisingly, enable cooling via the Stokes interaction commonly associated with heating. Our description includes both pulsed and continuous measurements as well as optical detection efficiency and open-system dynamics. For both cases, we… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.01735v2-abstract-full').style.display = 'inline'; document.getElementById('2408.01735v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.01735v2-abstract-full" style="display: none;"> We develop a theoretical framework to describe how zero-photon detection may be utilized to enhance laser cooling via the anti-Stokes interaction and, somewhat surprisingly, enable cooling via the Stokes interaction commonly associated with heating. Our description includes both pulsed and continuous measurements as well as optical detection efficiency and open-system dynamics. For both cases, we discuss how the cooling depends on the system parameters such as detection efficiency and optomechanical cooperativity, and we study the continuous-measurement-induced dynamics, contrasting to single-photon detection events. For the Stokes case, we explore the interplay between cooling and heating via optomechanical parametric amplification, and we find the efficiency required to cool a mechanical oscillator via zero-photon detection. This work serves as a companion article to the recent experiment [E. A. Cryer-Jenkins, K. D. Major, et al., arXiv:2408.01734 (2024)], which demonstrated enhanced laser cooling of a mechanical oscillator via zero-photon detection on the anti-Stokes signal. The framework developed here provides new approaches for cooling mechanical resonators that can be applied to a wide range of areas including nonclassical state preparation, quantum thermodynamics, and avoiding the often unwanted heating effects of parametric amplification. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.01735v2-abstract-full').style.display = 'none'; document.getElementById('2408.01735v2-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">15 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/2408.01734">arXiv:2408.01734</a> <span> [<a href="https://arxiv.org/pdf/2408.01734">pdf</a>, <a href="https://arxiv.org/format/2408.01734">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="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> </div> </div> <p class="title is-5 mathjax"> Something from Nothing: Enhanced Laser Cooling of a Mechanical Resonator via Zero-Photon Detection </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Cryer-Jenkins%2C+E+A">Evan A. Cryer-Jenkins</a>, <a href="/search/physics?searchtype=author&query=Major%2C+K+D">Kyle D. Major</a>, <a href="/search/physics?searchtype=author&query=Clarke%2C+J">Jack Clarke</a>, <a href="/search/physics?searchtype=author&query=Enzian%2C+G">Georg Enzian</a>, <a href="/search/physics?searchtype=author&query=Szczykulska%2C+M">Magdalena Szczykulska</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+J">Jinglei Zhang</a>, <a href="/search/physics?searchtype=author&query=Gupta%2C+A">Arjun Gupta</a>, <a href="/search/physics?searchtype=author&query=Leung%2C+A+C">Anthony C. Leung</a>, <a href="/search/physics?searchtype=author&query=Rathee%2C+H">Harsh Rathee</a>, <a href="/search/physics?searchtype=author&query=Svela%2C+A+%C3%98">Andreas 脴. Svela</a>, <a href="/search/physics?searchtype=author&query=Tan%2C+A+K+C">Anthony K. C. Tan</a>, <a href="/search/physics?searchtype=author&query=Beige%2C+A">Almut Beige</a>, <a href="/search/physics?searchtype=author&query=M%C3%B8lmer%2C+K">Klaus M酶lmer</a>, <a href="/search/physics?searchtype=author&query=Vanner%2C+M+R">Michael R. Vanner</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="2408.01734v2-abstract-short" style="display: inline;"> Throughout quantum science and technology, measurement is used as a powerful resource for nonlinear operations and quantum state engineering. In particular, single-photon detection is commonly employed for quantum-information applications and tests of fundamental physics. By contrast, and perhaps counter-intuitively, measurement of the absence of photons also provides useful information, and offer… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.01734v2-abstract-full').style.display = 'inline'; document.getElementById('2408.01734v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.01734v2-abstract-full" style="display: none;"> Throughout quantum science and technology, measurement is used as a powerful resource for nonlinear operations and quantum state engineering. In particular, single-photon detection is commonly employed for quantum-information applications and tests of fundamental physics. By contrast, and perhaps counter-intuitively, measurement of the absence of photons also provides useful information, and offers significant potential for a wide range of new experimental directions. Here, we propose and experimentally demonstrate cooling of a mechanical resonator below its laser-cooled mechanical occupation via zero-photon detection on the anti-Stokes scattered optical field and verify this cooling through heterodyne measurements. Our measurements are well captured by a stochastic master equation and the techniques introduced here open new avenues for cooling, quantum thermodynamics, quantum state engineering, and quantum measurement and control. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.01734v2-abstract-full').style.display = 'none'; document.getElementById('2408.01734v2-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">Main: 5 pages, 2 figures. Supplemental: 6 pages, 2 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/2307.11490">arXiv:2307.11490</a> <span> [<a href="https://arxiv.org/pdf/2307.11490">pdf</a>, <a href="https://arxiv.org/format/2307.11490">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey 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="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/10.1364/OPTICA.501089">10.1364/OPTICA.501089 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Second-Order Coherence Across the Brillouin Lasing Threshold </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Cryer-Jenkins%2C+E+A">E. A. Cryer-Jenkins</a>, <a href="/search/physics?searchtype=author&query=Enzian%2C+G">G. Enzian</a>, <a href="/search/physics?searchtype=author&query=Freisem%2C+L">L. Freisem</a>, <a href="/search/physics?searchtype=author&query=Moroney%2C+N">N. Moroney</a>, <a href="/search/physics?searchtype=author&query=Price%2C+J+J">J. J. Price</a>, <a href="/search/physics?searchtype=author&query=Svela%2C+A+%C3%98">A. 脴. Svela</a>, <a href="/search/physics?searchtype=author&query=Major%2C+K+D">K. D. Major</a>, <a href="/search/physics?searchtype=author&query=Vanner%2C+M+R">M. R. Vanner</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="2307.11490v1-abstract-short" style="display: inline;"> Brillouin-Mandelstam scattering is one of the most accessible nonlinear optical phenomena and has been widely studied since its theoretical discovery one hundred years ago. The scattering mechanism is a three-wave mixing process between two optical fields and one acoustic field and has found a broad range of applications spanning microscopy to ultra-narrow-linewidth lasers. Building on the success… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.11490v1-abstract-full').style.display = 'inline'; document.getElementById('2307.11490v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2307.11490v1-abstract-full" style="display: none;"> Brillouin-Mandelstam scattering is one of the most accessible nonlinear optical phenomena and has been widely studied since its theoretical discovery one hundred years ago. The scattering mechanism is a three-wave mixing process between two optical fields and one acoustic field and has found a broad range of applications spanning microscopy to ultra-narrow-linewidth lasers. Building on the success of utilizing this nonlinearity at a classical level, a rich avenue is now being opened to explore Brillouin scattering within the paradigm of quantum optics. Here, we take a key step in this direction by employing quantum optical techniques yet to be utilized for Brillouin scattering to characterize the second-order coherence of Stokes scattering across the Brillouin lasing threshold. We use a silica microsphere resonator and single-photon counters to observe the expected transition from bunched statistics of thermal light below the lasing threshold to Poissonian statistics of coherent light above the threshold. Notably, at powers approaching the lasing threshold, we also observe super-thermal statistics, which arise due to instability and a ``flickering'' in and out of lasing as the pump field is transiently depleted. The statistics observed across the transition, including the ``flickering'', are a result of the full nonlinear three-wave mixing process and cannot be captured by a linearized model. These measurements are in good agreement with numerical solutions of the three-wave Langevin equations and are well demarcated by analytical expressions for the instability and the lasing thresholds. These results demonstrate that applying second-order-coherence and photon-counting measurements to Brillouin scattering provides new methods to advance our understanding of Brillouin scattering itself and progress toward quantum-state preparation and characterization of acoustic modes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.11490v1-abstract-full').style.display = 'none'; document.getElementById('2307.11490v1-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> 21 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2023. </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">Main (8 pages, 2 figures) + Supplementary (6 pages, 1 figures), Submitted</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Optica 10, 1432 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.05175">arXiv:2103.05175</a> <span> [<a href="https://arxiv.org/pdf/2103.05175">pdf</a>, <a href="https://arxiv.org/format/2103.05175">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="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> </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/PhysRevLett.127.243601">10.1103/PhysRevLett.127.243601 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Non-Gaussian mechanical motion via single and multi-phonon subtraction from a thermal state </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Enzian%2C+G">Georg Enzian</a>, <a href="/search/physics?searchtype=author&query=Freisem%2C+L">Lars Freisem</a>, <a href="/search/physics?searchtype=author&query=Price%2C+J+J">John J. Price</a>, <a href="/search/physics?searchtype=author&query=Svela%2C+A+%C3%98">Andreas 脴. Svela</a>, <a href="/search/physics?searchtype=author&query=Clarke%2C+J">Jack Clarke</a>, <a href="/search/physics?searchtype=author&query=Shajilal%2C+B">Biveen Shajilal</a>, <a href="/search/physics?searchtype=author&query=Janousek%2C+J">Jiri Janousek</a>, <a href="/search/physics?searchtype=author&query=Buchler%2C+B+C">Ben C. Buchler</a>, <a href="/search/physics?searchtype=author&query=Lam%2C+P+K">Ping Koy Lam</a>, <a href="/search/physics?searchtype=author&query=Vanner%2C+M+R">Michael R. Vanner</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="2103.05175v2-abstract-short" style="display: inline;"> Quantum optical measurement techniques offer a rich avenue for quantum control of mechanical oscillators via cavity optomechanics. In particular, a powerful yet little explored combination utilizes optical measurements to perform heralded non-Gaussian mechanical state preparation followed by tomography to determine the mechanical phase-space distribution. Here, we experimentally perform heralded s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.05175v2-abstract-full').style.display = 'inline'; document.getElementById('2103.05175v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.05175v2-abstract-full" style="display: none;"> Quantum optical measurement techniques offer a rich avenue for quantum control of mechanical oscillators via cavity optomechanics. In particular, a powerful yet little explored combination utilizes optical measurements to perform heralded non-Gaussian mechanical state preparation followed by tomography to determine the mechanical phase-space distribution. Here, we experimentally perform heralded single- and multi-phonon subtraction via photon counting to a laser-cooled mechanical thermal state with a Brillouin optomechanical system at room temperature, and use optical heterodyne detection to measure the $s$-parameterized Wigner distribution of the non-Gaussian mechanical states generated. The techniques developed here advance the state-of-the-art for optics-based tomography of mechanical states and will be useful for a broad range of applied and fundamental studies that utilize mechanical quantum-state engineering and tomography. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.05175v2-abstract-full').style.display = 'none'; document.getElementById('2103.05175v2-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> 22 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">Main and supplementary in single file. 19 pages, 6 figures. (www.qmeas.net)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 127, 243601 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2101.10170">arXiv:2101.10170</a> <span> [<a href="https://arxiv.org/pdf/2101.10170">pdf</a>, <a href="https://arxiv.org/format/2101.10170">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</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/PhysRevLett.124.223901">10.1103/PhysRevLett.124.223901 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Kerr-Nonlinearity-Induced Mode-Splitting in Optical Microresonators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ghalanos%2C+G+N">George N. Ghalanos</a>, <a href="/search/physics?searchtype=author&query=Silver%2C+J+M">Jonathan M. Silver</a>, <a href="/search/physics?searchtype=author&query=Del+Bino%2C+L">Leonardo Del Bino</a>, <a href="/search/physics?searchtype=author&query=Moroney%2C+N">Niall Moroney</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+S">Shuangyou Zhang</a>, <a href="/search/physics?searchtype=author&query=Woodley%2C+M+T+M">Michael T. M. Woodley</a>, <a href="/search/physics?searchtype=author&query=Svela%2C+A+%C3%98">Andreas 脴. Svela</a>, <a href="/search/physics?searchtype=author&query=Del%27Haye%2C+P">Pascal Del'Haye</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="2101.10170v1-abstract-short" style="display: inline;"> The Kerr effect in optical microresonators plays an important role for integrated photonic devices and enables third harmonic generation, four-wave mixing, and the generation of microresonator-based frequency combs. Here we experimentally demonstrate that the Kerr nonlinearity can split ultra-high-Q microresonator resonances for two continuous-wave lasers. The resonance splitting is induced by sel… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.10170v1-abstract-full').style.display = 'inline'; document.getElementById('2101.10170v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2101.10170v1-abstract-full" style="display: none;"> The Kerr effect in optical microresonators plays an important role for integrated photonic devices and enables third harmonic generation, four-wave mixing, and the generation of microresonator-based frequency combs. Here we experimentally demonstrate that the Kerr nonlinearity can split ultra-high-Q microresonator resonances for two continuous-wave lasers. The resonance splitting is induced by self- and cross-phase modulation and counter-intuitively enables two lasers at different wavelengths to be simultaneously resonant in the same microresonator mode. We develop a pump-probe spectroscopy scheme that allows us to measure power dependent resonance splittings of up to 35 cavity linewidths (corresponding to 52 MHz) at 10 mW of pump power. The required power to split the resonance by one cavity linewidth is only 286$渭$W. In addition, we demonstrate threefold resonance splitting when taking into account four-wave mixing and two counterpropagating probe lasers. These Kerr splittings are of interest for applications that require two resonances at optically controlled offsets, eg. for opto-mechanical coupling to phonon modes, optical memories, and precisely adjustable spectral filters. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.10170v1-abstract-full').style.display = 'none'; document.getElementById('2101.10170v1-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 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review Letters 124, 223901 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.13578">arXiv:2004.13578</a> <span> [<a href="https://arxiv.org/pdf/2004.13578">pdf</a>, <a href="https://arxiv.org/format/2004.13578">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-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/10.1109/JLT.2020.2975119">10.1109/JLT.2020.2975119 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Logic Gates based on Interaction of Counterpropagating Light in Microresonators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moroney%2C+N">Niall Moroney</a>, <a href="/search/physics?searchtype=author&query=Del+Bino%2C+L">Leonardo Del Bino</a>, <a href="/search/physics?searchtype=author&query=Woodley%2C+M+T+M">Michael T. M. Woodley</a>, <a href="/search/physics?searchtype=author&query=Ghalanos%2C+G+N">George N. Ghalanos</a>, <a href="/search/physics?searchtype=author&query=Silver%2C+J+M">Jonathan M. Silver</a>, <a href="/search/physics?searchtype=author&query=Svela%2C+A+%C3%98">Andreas 脴 Svela</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+S">Shuangyou Zhang</a>, <a href="/search/physics?searchtype=author&query=Del%27Haye%2C+P">Pascal Del'Haye</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="2004.13578v1-abstract-short" style="display: inline;"> Optical logic has the potential to replace electronics with photonic circuits in applications for which optic-to-electronic conversion is impractical and for integrated all-optical circuits. Nonlinear optics in whispering gallery mode resonators provides low power, scalable methods to achieve optical logic. We demonstrate, for the first time, an all-optical, universal logic gate using counterpropa… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.13578v1-abstract-full').style.display = 'inline'; document.getElementById('2004.13578v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.13578v1-abstract-full" style="display: none;"> Optical logic has the potential to replace electronics with photonic circuits in applications for which optic-to-electronic conversion is impractical and for integrated all-optical circuits. Nonlinear optics in whispering gallery mode resonators provides low power, scalable methods to achieve optical logic. We demonstrate, for the first time, an all-optical, universal logic gate using counterpropagating light in which all signals have the same operating optical frequency. Such a device would make possible the routing of optical signals without the need for conversion into the electronic domain, thus reducing latency. The operating principle of the device is based on the Kerr interaction between counter-propagating beams in a whispering gallery mode resonator which induces a splitting between the resonance frequencies for the two propagating directions. Our gate uses a fused silica microrod resonator with a \textit{Q}-factor of $\SI{2e8}{}$. This method of optical logic gives a practical solution to the on-chip routing of light. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.13578v1-abstract-full').style.display = 'none'; document.getElementById('2004.13578v1-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> 28 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of Lightwave Technology, vol. 38, no. 6, pp. 1414-1419, 15 March15, 2020 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2002.12379">arXiv:2002.12379</a> <span> [<a href="https://arxiv.org/pdf/2002.12379">pdf</a>, <a href="https://arxiv.org/format/2002.12379">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</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/10.1038/s41377-020-00440-2">10.1038/s41377-020-00440-2 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Coherent suppression of backscattering in optical microresonators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Svela%2C+A+%C3%98">Andreas 脴. Svela</a>, <a href="/search/physics?searchtype=author&query=Silver%2C+J+M">Jonathan M. Silver</a>, <a href="/search/physics?searchtype=author&query=Del+Bino%2C+L">Leonardo Del Bino</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+S">Shuangyou Zhang</a>, <a href="/search/physics?searchtype=author&query=Woodley%2C+M+T+M">Michael T. M. Woodley</a>, <a href="/search/physics?searchtype=author&query=Vanner%2C+M+R">Michael R. Vanner</a>, <a href="/search/physics?searchtype=author&query=Del%27Haye%2C+P">Pascal Del'Haye</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="2002.12379v2-abstract-short" style="display: inline;"> As light propagates along a waveguide, a fraction of the field can be reflected by Rayleigh scatterers. In high-quality-factor whispering-gallery-mode microresonators, this intrinsic backscattering is primarily caused by either surface or bulk material imperfections. For several types of microresonator-based experiments and applications, minimal backscattering in the cavity is of critical importan… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.12379v2-abstract-full').style.display = 'inline'; document.getElementById('2002.12379v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2002.12379v2-abstract-full" style="display: none;"> As light propagates along a waveguide, a fraction of the field can be reflected by Rayleigh scatterers. In high-quality-factor whispering-gallery-mode microresonators, this intrinsic backscattering is primarily caused by either surface or bulk material imperfections. For several types of microresonator-based experiments and applications, minimal backscattering in the cavity is of critical importance, and thus, the ability to suppress backscattering is essential. We demonstrate that the introduction of an additional scatterer into the near field of a high-quality-factor microresonator can coherently suppress the amount of backscattering in the microresonator by more than 30 dB. The method relies on controlling the scatterer position such that the intrinsic and scatterer-induced backpropagating fields destructively interfere. This technique is useful in microresonator applications where backscattering is currently limiting the performance of devices, such as ring-laser gyroscopes and dual frequency combs, which both suffer from injection locking. Moreover, these findings are of interest for integrated photonic circuits in which back reflections could negatively impact the stability of laser sources or other components. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.12379v2-abstract-full').style.display = 'none'; document.getElementById('2002.12379v2-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> 5 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2020. </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">7 pages, 4 figures, 2 supplemental pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Light: Science & Applications 9, 204 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.05479">arXiv:2001.05479</a> <span> [<a href="https://arxiv.org/pdf/2001.05479">pdf</a>, <a href="https://arxiv.org/format/2001.05479">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> A Nonlinear Enhanced Microresonator Gyroscope </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Silver%2C+J+M">Jonathan M. Silver</a>, <a href="/search/physics?searchtype=author&query=Del+Bino%2C+L">Leonardo Del Bino</a>, <a href="/search/physics?searchtype=author&query=Woodley%2C+M+T+M">Michael T. M. Woodley</a>, <a href="/search/physics?searchtype=author&query=Ghalanos%2C+G+N">George N. Ghalanos</a>, <a href="/search/physics?searchtype=author&query=Svela%2C+A+%C3%98">Andreas 脴. Svela</a>, <a href="/search/physics?searchtype=author&query=Moroney%2C+N">Niall Moroney</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+S">Shuangyou Zhang</a>, <a href="/search/physics?searchtype=author&query=Grattan%2C+K+T+V">Kenneth T. V. Grattan</a>, <a href="/search/physics?searchtype=author&query=Del%27Haye%2C+P">Pascal Del'Haye</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="2001.05479v1-abstract-short" style="display: inline;"> We demonstrate a novel optical microresonator gyroscope whose responsivity to rotation is enhanced by a factor of around $10^4$ by operating close to the critical point of a spontaneous symmetry breaking transition between counterpropagating light. We present a proof-of-principle rotation measurement using a resonator with a diameter of 3 mm. In addition, we characterise the dynamical response of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.05479v1-abstract-full').style.display = 'inline'; document.getElementById('2001.05479v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.05479v1-abstract-full" style="display: none;"> We demonstrate a novel optical microresonator gyroscope whose responsivity to rotation is enhanced by a factor of around $10^4$ by operating close to the critical point of a spontaneous symmetry breaking transition between counterpropagating light. We present a proof-of-principle rotation measurement using a resonator with a diameter of 3 mm. In addition, we characterise the dynamical response of the system to a sinusoidally varying rotation, and show this to be well described by a simple theoretical model. We observe the universal critical behaviors of responsivity enhancement and critical slowing down, both of which are beneficial in an optical gyroscope. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.05479v1-abstract-full').style.display = 'none'; document.getElementById('2001.05479v1-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> 15 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </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">8 pages, 3 figures</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> 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