Signal-recycled weak measurement for ultrasensitive velocity estimation

• 作者: Sen-Zhi Fang Yang Dai Qian-Wen Jiang Hua-Tang Tan Gao-Xiang Li Qing-Lin Wu
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: GENERAL
• 页码范围: 273-280
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1056/abda2d

摘要

Weak value amplification has shown its superiority in measurement of small physical effects.Here we introduce a signal-recycled weak-value-based velocity measurement strategy to decrease the attenuation of detected photons during the post-selection.Like the power-recycled scheme,we can improve the number of detected photons and signal-to-noise ratio of velocity by forming a cavity.However,optimal improvements of number of detected photons and signal-to-noise ratio cannot be obtained simultaneously in our signal-recycled scheme owing to the walk-off effect.Furthermore,we find that the reflected light is relatively strong compared with the power-recycled scheme,which may increase the collection-detection efficiency in prospective relevant experiment.