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arXiv · 2110.11060

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

Jing-Hui Huang·Xiang-Yun Hu·Xue-Ying Duan·Guang-Jun Wan
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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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Jing-Hui Huang, Xiang-Yun Hu, Xue-Ying Duan, Guang-Jun Wan. 2021-10-21. Enhancing the sensitivity of amplification of rotation velocity in Sagnac's interferometer with biased weak measurement. https://arxiv.org/abs/2110.11060

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