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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/2408.06317">arXiv:2408.06317</a> <span> [<a href="https://arxiv.org/pdf/2408.06317">pdf</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> </div> </div> <p class="title is-5 mathjax"> Generation of hypercubic cluster states in 1-4 dimensions in a simple optical system </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/quant-ph?searchtype=author&query=Zhou%2C+Z">Zhifan Zhou</a>, <a href="/search/quant-ph?searchtype=author&query=de+Araujo%2C+L+E+E">Lu铆s E. E. de Araujo</a>, <a href="/search/quant-ph?searchtype=author&query=Dimario%2C+M">Matt Dimario</a>, <a href="/search/quant-ph?searchtype=author&query=Zhao%2C+J">Jie Zhao</a>, <a href="/search/quant-ph?searchtype=author&query=Su%2C+J">Jing Su</a>, <a href="/search/quant-ph?searchtype=author&query=Wu%2C+M">Meng-Chang Wu</a>, <a href="/search/quant-ph?searchtype=author&query=Anderson%2C+B+E">B. E. Anderson</a>, <a href="/search/quant-ph?searchtype=author&query=Jones%2C+K+M">Kevin M. Jones</a>, <a href="/search/quant-ph?searchtype=author&query=Lett%2C+P+D">Paul D. Lett</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="2408.06317v1-abstract-short" style="display: inline;"> Entangled graph states can be used for quantum sensing and computing applications. Error correction in measurement-based quantum computing schemes will require the construction of cluster states in at least 3 dimensions. Here we generate 1-, 2-, 3-, and 4-dimensional optical frequency-mode cluster states by sending broadband 2-mode vacuum-squeezed light through an electro-optical modulator (EOM) d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.06317v1-abstract-full').style.display = 'inline'; document.getElementById('2408.06317v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.06317v1-abstract-full" style="display: none;"> Entangled graph states can be used for quantum sensing and computing applications. Error correction in measurement-based quantum computing schemes will require the construction of cluster states in at least 3 dimensions. Here we generate 1-, 2-, 3-, and 4-dimensional optical frequency-mode cluster states by sending broadband 2-mode vacuum-squeezed light through an electro-optical modulator (EOM) driven with multiple frequencies. We create the squeezed light using 4-wave mixing in Rb atomic vapor and mix the sideband frequencies (qumodes) using an EOM, as proposed by Zhu et al. (1), producing a pattern of entanglement correlations that constitute continuous-variable graph states containing up to several hundred qumodes. We verify the entanglement structure by using homodyne measurements to construct the covariance matrices and evaluate the nullifiers. This technique enables scaling of optical cluster states to multiple dimensions without increasing loss. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.06317v1-abstract-full').style.display = 'none'; document.getElementById('2408.06317v1-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> 12 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.11900">arXiv:2310.11900</a> <span> [<a href="https://arxiv.org/pdf/2310.11900">pdf</a>, <a href="https://arxiv.org/format/2310.11900">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="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> Properties of Two-Mode Quadrature Squeezing from Four-wave Mixing in Rubidium Vapor </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/quant-ph?searchtype=author&query=De+Araujo%2C+L+E+E">Lu脥s E. E. De Araujo</a>, <a href="/search/quant-ph?searchtype=author&query=Zhou%2C+Z">Zhifan Zhou</a>, <a href="/search/quant-ph?searchtype=author&query=Dimario%2C+M">Matt Dimario</a>, <a href="/search/quant-ph?searchtype=author&query=Anderson%2C+B+E">B. E. Anderson</a>, <a href="/search/quant-ph?searchtype=author&query=Zhao%2C+J">Jie Zhao</a>, <a href="/search/quant-ph?searchtype=author&query=Jones%2C+K+M">Kevin M. Jones</a>, <a href="/search/quant-ph?searchtype=author&query=Lett%2C+P+D">Paul D. Lett</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="2310.11900v1-abstract-short" style="display: inline;"> We present a study of homodyne measurements of two-mode, vacuum-seeded, quadrature-squeezed light generated by four-wave mixing in warm rubidium vapor. Our results reveal that the vacuum squeezing can extend down to measurement frequencies of less than 1 Hz, and the squeezing bandwidth, similar to the seeded intensity-difference squeezing measured in this system, reaches up to approximately 20 MHz… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.11900v1-abstract-full').style.display = 'inline'; document.getElementById('2310.11900v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.11900v1-abstract-full" style="display: none;"> We present a study of homodyne measurements of two-mode, vacuum-seeded, quadrature-squeezed light generated by four-wave mixing in warm rubidium vapor. Our results reveal that the vacuum squeezing can extend down to measurement frequencies of less than 1 Hz, and the squeezing bandwidth, similar to the seeded intensity-difference squeezing measured in this system, reaches up to approximately 20 MHz for typical pump parameters. By dividing the squeezing bandwidth into smaller frequency bins, we show that different sideband frequencies represent independent sources of two-mode squeezing. Such frequency bins may provide useful qumodes for quantum information processing experiments. We also investigate the impact of group velocity delays on the correlations in the system. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.11900v1-abstract-full').style.display = 'none'; document.getElementById('2310.11900v1-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.13716">arXiv:2306.13716</a> <span> [<a href="https://arxiv.org/pdf/2306.13716">pdf</a>, <a href="https://arxiv.org/format/2306.13716">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> </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/OPTICAQ.505870">10.1364/OPTICAQ.505870 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nonlocal phase modulation of multimode, continuous-variable twin beams </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/quant-ph?searchtype=author&query=Zhou%2C+Z">Zhifan Zhou</a>, <a href="/search/quant-ph?searchtype=author&query=de+Araujo%2C+L+E+E">Lu谋s E. E. de Araujo</a>, <a href="/search/quant-ph?searchtype=author&query=DiMario%2C+M">Matt DiMario</a>, <a href="/search/quant-ph?searchtype=author&query=Anderson%2C+B+E">B. E. Anderson</a>, <a href="/search/quant-ph?searchtype=author&query=Zhao%2C+J">Jie Zhao</a>, <a href="/search/quant-ph?searchtype=author&query=Jones%2C+K+M">Kevin M. Jones</a>, <a href="/search/quant-ph?searchtype=author&query=Lett%2C+P+D">Paul D. Lett</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="2306.13716v1-abstract-short" style="display: inline;"> We investigate experimentally the nonlocal phase modulation of multiple-frequency-mode, continuous-variable entangled twin beams. We use a pair of electro-optical phase modulators to modulate the entangled probe and conjugate light beams produced by four-wave mixing in hot Rb vapor. A single phase modulator in either one of the twin beams reduces the two-mode squeezing signal, and we find that the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.13716v1-abstract-full').style.display = 'inline'; document.getElementById('2306.13716v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.13716v1-abstract-full" style="display: none;"> We investigate experimentally the nonlocal phase modulation of multiple-frequency-mode, continuous-variable entangled twin beams. We use a pair of electro-optical phase modulators to modulate the entangled probe and conjugate light beams produced by four-wave mixing in hot Rb vapor. A single phase modulator in either one of the twin beams reduces the two-mode squeezing signal, and we find that the modulations interfere nonlocally to modify the beam correlations. The nonlocal modulation of the beams can produce quantum correlations among frequency modes of the multimode fields. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.13716v1-abstract-full').style.display = 'none'; document.getElementById('2306.13716v1-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> 23 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Optica Quantum Vol. 1, Issue 2, pp. 71-77 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/quant-ph/0611291">arXiv:quant-ph/0611291</a> <span> [<a href="https://arxiv.org/pdf/quant-ph/0611291">pdf</a>, <a href="https://arxiv.org/ps/quant-ph/0611291">ps</a>, <a href="https://arxiv.org/format/quant-ph/0611291">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> </div> </div> <p class="title is-5 mathjax"> Strong electromagnetically induced transparency in atomic media with large residual Doppler broadening </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/quant-ph?searchtype=author&query=de+Araujo%2C+L+E+E">Luis E. E. de Araujo</a>, <a href="/search/quant-ph?searchtype=author&query=Carvalho%2C+S+A">Silvania A. Carvalho</a>, <a href="/search/quant-ph?searchtype=author&query=Soares%2C+L+S">Luciano S. Soares</a>, <a href="/search/quant-ph?searchtype=author&query=Soares%2C+A+A">Antonio A. Soares</a>, <a href="/search/quant-ph?searchtype=author&query=Mirage%2C+A">Armando Mirage</a>, <a href="/search/quant-ph?searchtype=author&query=Pereira%2C+D">Daniel Pereira</a>, <a href="/search/quant-ph?searchtype=author&query=Cruz%2C+F+C">Flavio C. Cruz</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="quant-ph/0611291v1-abstract-short" style="display: inline;"> Electromagnetically induced transparency and coherent population trapping were observed in a hot (1000 K) calcium vapor embedded into an electrical gas discharge. Unexpectedly large transparencies (of up to 70%) were observed under very unfavorable conditions: probe wavelength shorter than the coupling wavelength, and coupling Rabi frequency significantly smaller than the residual Doppler linewi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('quant-ph/0611291v1-abstract-full').style.display = 'inline'; document.getElementById('quant-ph/0611291v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="quant-ph/0611291v1-abstract-full" style="display: none;"> Electromagnetically induced transparency and coherent population trapping were observed in a hot (1000 K) calcium vapor embedded into an electrical gas discharge. Unexpectedly large transparencies (of up to 70%) were observed under very unfavorable conditions: probe wavelength shorter than the coupling wavelength, and coupling Rabi frequency significantly smaller than the residual Doppler linewidth of the two photon transition. We developed a theoretical model that shows that the observed results are due to the combined effects of a strong probe beam and a small open character of the atomic system. Coherent population trapping also manifests itself as a change in the impedance of the gas discharge, and the phenomenon can be probed with high sensitivity via the optogalvanic effect. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('quant-ph/0611291v1-abstract-full').style.display = 'none'; document.getElementById('quant-ph/0611291v1-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> 30 November, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2006. </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, 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 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