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Effects of nonlinearity and technical noise on weak-value amplified phase measurement
Journal of Physics B: Atomic, Molecular and Optical Physics ( IF 1.6 ) Pub Date : 2020-05-26 , DOI: 10.1088/1361-6455/ab81e8
Hao Wu 1, 2 , Zheng-Chun Luo 3 , Li-Ping Xu 2, 3 , Peng Wu 2 , Hao-Fei Shi 2 , Tian-Ying Chang 3 , Chun-Lei Du 1, 2 , Yang Liu 1 , Yue-Guang Lu 1 , Hong-Liang Cui 2, 3
Affiliation  

An exact nonlinear model for pointer shift estimation in phase measurement with weak-value amplification is presented, and the necessary assumptions for the linear approximations are discussed. A realistic experimental weak measurement system with pure imaginary weak-value is demonstrated to verify the nonlinear model, and it is shown that our model is effective over a wide dynamic range. In addition, the influence of several common-type technical noise on the uncertainty of pointer shift estimation in momentum space is analyzed theoretically and verified experimentally, in connection with the relationship between the working condition and the signal-to-noise ratio of the system. This close examination of the impact and ramifications of nonlinearity and technical noise in a realistic experimental phase measurement setting employing weak value amplification provides helpful guidance for its invocation in optical interferometric sensor design.

中文翻译:

非线性和技术噪声对弱值放大相位测量的影响

提出了一种精确的非线性模型,用于在弱值放大的相位测量中进行指针偏移估计,并讨论了线性近似的必要假设。演示了一个具有纯虚弱值的实际实验弱测量系统,以验证非线性模型,并且表明我们的模型在宽动态范围内均有效。另外,结合系统的工作条件与信噪比之间的关系,对动量空间中几种常见技术噪声对指针偏移估计不确定性的影响进行了理论分析和实验验证。
更新日期:2020-05-26
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