Squeezing-enhanced quantum sensing with quadratic optomechanics

• URL: http://arxiv.org/abs/2202.08690v2
• Date: Sat, 3 Aug 2024 12:34:53 GMT
• Title: Squeezing-enhanced quantum sensing with quadratic optomechanics
• Authors: Sheng-Dian Zhang, Jie Wang, Qian Zhang, Ya-Feng Jiao, Yun-Lan Zuo, Şahin K. Özdemir, Cheng-Wei Qiu, Franco Nori, Hui Jing,
• Abstract summary: Cavity optomechanical (COM) sensors, enhanced by quantum squeezing or entanglement, have become powerful tools for measuring ultra-weak forces. Here we show that the performance of such a system can be further improved surpassing the standard quantum limit by using quantum squeezed light.
• Score: 3.4737317976038584
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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.

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