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北美退伍军人节(Veterans Day),12 日无更新
arXiv 2005.01911quant-ph
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结合压缩和参量放大的量子干涉仪

Quantum interferometer combining squeezing and parametric amplification

Xiaojie Zuo, Zhihui Yan, Yanni Feng, Jingxu Ma, Xiaojun Jia, Changde Xie, Kunchi Peng

摘要:

高精度干涉仪是精密计量的基础,而量子噪声限制了干涉仪的最终灵敏度。在这里,我们提出并实验证明了一个紧凑的量子干涉仪,包括两个光学参量放大器和压缩态内产生的干涉仪直接用于相位传感量子态。通过压缩散粒噪声和放大相位敏感强度,确定性地实现了超过标准量子极限的$4.86\pm 0.24$ dB的灵敏度提高,并在相同的相位敏感强度下获得了比现有干涉仪更小的最小可探测相位。这种干涉系统在各种物理量微小变化的测量中具有显著的潜在应用。

英文摘要:

High precision interferometers are the building blocks of precision metrology and the ultimate interferometric sensitivity is limited by the quantum noise. Here we propose and experimentally demonstrate a compact quantum interferometer involving two optical parametric amplifiers and the squeezed states generated within the interferometer are directly used for the phase-sensing quantum state. By both squeezing shot noise and amplifying phase-sensing intensity the sensitivity improvement of $4.86\pm 0.24$ dB beyond the standard quantum limit is deterministically realized and a minimum detectable phase smaller than that of all present interferometers under the same phase-sensing intensity is achieved. This interferometric system has significantly potential applications in a variety of measurements for tiny variances of physical quantities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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