Fundamental Quantum Limits of Multicarrier Optomechanical Sensors.
Fundamental Quantum Limits of Multicarrier Optomechanical Sensors.
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DOI：
10.1103/physrevlett.121.110505
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发表时间：
2018-04
影响因子：
8.6
通讯作者：
D. Branford;H. Miao;A. Datta
中科院分区：
文献类型：
--
作者：
D. Branford;H. Miao;A. Datta
涉及多个光学载体的光机械传感器可能会经历机械介导的相互作用，从而导致光场上的多模相关性。一个例子是激光干涉引力波探测器，它引入多个载波频率用于经典传感和控制目的。一个突出的问题是，这种多载波光机械传感器在量子限制灵敏度方面是否优于单载波传感器。我们证明，传感器的单载波实例可以实现最佳精度。对于目前的LIGO探测系统来说，这个精度已经可以达到。
Optomechanical sensors involving multiple optical carriers can experience mechanically mediated interactions causing multimode correlations across the optical fields. One instance is laser-interferometric gravitational wave detectors which introduce multiple carrier frequencies for classical sensing and control purposes. An outstanding question is whether such multicarrier optomechanical sensors outperform their single-carrier counterpart in terms of quantum-limited sensitivity. We show that the best precision is achieved by a single-carrier instance of the sensor. For the current LIGO detection system this precision is already reachable.