Quantum enhanced optomechanical magnetometry
Quantum enhanced optomechanical magnetometry
复制标题
量子增强光机械磁力测量
DOI：
10.1364/optica.5.000850
复制
发表时间：
2018-07-20
期刊：
影响因子：
10.4
通讯作者：
Andersen, Ulrik L.
中科院分区：
文献类型：
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作者：
Li, Bei-Bei;Bilek, Jan;Andersen, Ulrik L.
微腔光学机械装置中机械和光学响应的共振增强允许对刺激物（例如加速度、质量和磁场）进行精密灵敏的测量。在这项工作中，我们表明，量子相关光可以提高这种传感器的性能，提高它们的灵敏度和带宽。具体来说，我们开发了一种基于硅芯片的腔光机械磁强计，采用相位压缩光来抑制光学散粒噪声。在散粒噪声是主要噪声源的频率下，这允许磁场灵敏度提高20%。此外，压缩光拓宽了热噪声占主导地位的频率范围，这具有将整个传感器带宽增加50%的效果。这些原理证明的结果打开了在芯片级传感器和设备中更广泛地应用量子相关光的大门。(C)根据OSA开放获取出版协议的条款，2018年美国光学学会
The resonant enhancement of both mechanical and optical response in microcavity optomechanical devices allows exquisitely sensitive measurements of stimuli, such as acceleration, mass, and magnetic fields. In this work, we show that quantum correlated light can improve the performance of such sensors, increasing both their sensitivity and their bandwidth. Specifically, we develop a silicon-chip-based cavity optomechanical magnetometer that incorporates phase squeezed light to suppress optical shot noise. At frequencies where shot noise is the dominant noise source, this allows a 20% improvement in magnetic field sensitivity. Furthermore, squeezed light broadens the range of frequencies at which thermal noise dominates, which has the effect of increasing the overall sensor bandwidth by 50%. These proof-of-principle results open the door to apply quantum correlated light more broadly in chip-scale sensors and devices. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement