Measuring angular rotation via the rotatory dispersion effect

Zhou, Chongqi; Zhong, Suyi; Ma, Ke; Xu, Yang; Shi, Lixuan; He, Yonghong

doi:10.1103/physreva.102.063717

Cited by 10 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[32][33][34][35] While the potential application of the weak value in signal amplification was pointed out as early as 1990, [36] it has drawn no particular attention until the first report on the observation of the spin Hall effect of light via WVA. [21] Since then, many kinds of signal measurements via WVA have been reported, such as geometric phase, [37] angular rotation, [38,39] spin Hall effect, [21,[40][41][42] single-photon nonlinearity, [43][44][45][46] frequency, [47,48] etc.…”

Section: Introductionmentioning

confidence: 99%

Measuring small longitudinal phase shifts via weak measurement amplification

Xu 徐,

Hu 胡,

Hu 胡

et al. 2024

Chinese Phys. B

View full text Add to dashboard Cite

Weak measurement amplification, which is considered as a very promising scheme in precision measurement, has been applied to various small physical quantities estimations. Since many physical quantities can be converted into phase signals, it is interesting and important to consider measuring small longitudinal phase shifts by using weak measurement. Here, we propose and experimentally demonstrate a novel weak measurement amplification-based small longitudinal phase estimation, which is suitable for polarization interferometry. We realize one order of magnitude amplification measurement of a small phase signal directly introduced by liquid crystal variable retarder and show it is robust to the imperfection of interference. Besides, we analyze the effect of magnification error which is never considered in the previous works, and find the constraint on the magnification. Our results may find important applications in high-precision measurements, e.g., gravitational wave detection.

show abstract

Section: Introductionmentioning

confidence: 99%

Measuring small longitudinal phase shifts via weak measurement amplification

Xu 徐,

Hu 胡,

Hu 胡

et al. 2024

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

“…In this work, we propose an ultrasensitive reflection-type RI sensor with rotatory biased weak measurement [24]. We break the limits on the sensitivity via the optical rotatory dispersion effect [25]. With noise analysis, we prove that our scheme can alleviate the saturation effect of the detector.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive refractive index sensor with rotatory biased weak measurement

Zhou¹,

Xu²,

Zhang³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

In this paper, we present an ultrasensitive reflection-type optical refractive index (RI) sensor with rotatory biased weak measurement. In our scheme, based on the optical rotatory dispersion effect, a bias phase is introduced by the postselection process. The bias phase without dispersion effect makes stronger postselection and smaller coupling strength accessible. Experimentally, our scheme obtains an enhanced sensitivity of 13605 nm/RIU while detecting fewer photons, which can effectively alleviate the saturation effect of the detector. We demonstrate a RI resolution of 1.8×10 −7 RIU. With response model and noise analysis of the CCD detector, we show that the performance of the RI sensor depends mainly on the long-time correlated noise of the light source and detector, and prove that our scheme gains advantages due to its high sensitivity. An ultimate resolution of 10 −9 RIU can be attained for our system.

show abstract