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arXiv 2202.08690quant-ph
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利用二次光力学实现压缩增强的量子传感

Squeezing-enhanced quantum sensing with quadratic optomechanics

Sheng-Dian Zhang, Jie Wang, Qian Zhang, Ya-Feng Jiao, Yun-Lan Zuo, Şahin K. Özdemir, Cheng-Wei Qiu, Franco Nori, Hui Jing

AI总结:

针对线性腔光力学传感器难以测量机械能的限制,本文提出在二次COM系统中引入量子压缩光,使其性能超越标准量子极限,并兼容现有先进工程技术。

摘要:

借助量子压缩或纠缠增强的腔光力学(COM)传感器,已成为以高精度和高灵敏度测量超弱力的强大工具。然而,这些传感器通常依赖线性COM耦合,当需要测量机械能时,这构成了一个根本性限制。最近,有研究预测在二次COM系统中信噪比会获得巨大增强。本文表明,通过使用量子压缩光,可以进一步提升这种系统的性能,使其超越标准量子极限。我们的方法与先进COM传感器现有的工程技术兼容,并为将COM传感器用于基本物理定律检验和量子计量应用提供了新的机遇。

英文摘要:

Cavity optomechanical (COM) sensors, enhanced by quantum squeezing or entanglement, have become powerful tools for measuring ultra-weak forces with high precision and sensitivity. However, these sensors usually rely on linear COM couplings, a fundamental limitation when measurements of the mechanical energy are desired. Very recently, a giant enhancement of the signal-to-noise ratio was predicted in a quadratic COM system. Here we show that the performance of such a system can be further improved surpassing the standard quantum limit by using quantum squeezed light. Our approach is compatible with available engineering techniques of advanced COM sensors and provides new opportunities for using COM sensors in tests of fundamental laws of physics and quantum metrology applications.

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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