Enhancing the sensitivity of amplification of rotation velocity in Sagnac's interferometer with biased weak measurement

• URL: http://arxiv.org/abs/2110.11060v1
• Date: Thu, 21 Oct 2021 11:14:23 GMT
• Title: Enhancing the sensitivity of amplification of rotation velocity in Sagnac's interferometer with biased weak measurement
• Authors: Jing-Hui Huang and Xiang-Yun Hu and Xue-Ying Duan and Guang-Jun Wan
• Abstract summary: biased weak measurement has shown higher precision than conventional measurement. In this paper, we propose a scheme of detecting rotation velocity in Sagnac's interferometer with BWM.
• Score: 3.9858496473361402
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recently, biased weak measurement(BWM) has shown higher precision than both conventional measurement and standard weak measurement(SWM) in optical metrology. In this paper, we propose a scheme of detecting rotation velocity in Sagnac's interferometer with BWM. In particular, BWM employs an additional reduction of photons in the post-selection by introducing a pre-coupling, and the remaining photons have been shown to be extremely sensitive to the estimated parameter. In addition, our numerical results show that the scheme with BWM can obtain a higher sensitivity than the scheme with SWM.

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