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

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. Recently, biased weak measurement(BWM) has shown higher precision than both conventional measurement and standard weak measurement(SWM) in optical metrology [10,9]. BWM employs an additional reduction of photons in the post-selection by introducing a precoupling, and the remaining photons have been shown to be extremely sensitive to the estimated parameter. In this work, we propose a scheme to enhance the sensitivity of amplification of rotation velocity in Sagnac's interferometer with BWM.

Superluminal Spaceflight, Negative Mass, Closed Time Like Curves, Manipulation of Inertia by Advanced Electromagnetic Fields and Speculations on Time and Energy

“…Roland Smith was not aware of this perhaps, and there are other ways of creating negative gravity field with negative mass to perhaps, travel backwards in time. Guang-Jun Wang [28] they outline in their experiment, recently biased weak measurements (BWM) has shown higher precision than both conventional measurements and standard weak measurements (SWM) in optical metrology. In this [They] propose a scheme of detecting rotation velocity in Sagnac's interferometer with BWM.…”