Practical Advantages of Almost-Balanced-Weak-Values Metrological Techniques
Optics
2017-06-14 v2 Instrumentation and Detectors
Abstract
Precision measurements of ultra-small linear velocities of one of the mirrors in a Michelson interferometer are performed using two different weak-values techniques. We show that the technique of Almost-Balanced Weak Values (ABWV) offers practical advantages over the technique of Weak-Value Amplification (WVA), resulting in larger signal-to-noise ratios and the possibility of longer integration times due to robustness to slow drifts. As an example of the performance of the ABWV protocol we report a velocity sensitivity of 60 fm/s after 40 hours of integration time. The sensitivity of the Doppler shift due to the moving mirror is of 150 nHz.
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Cite
@article{arxiv.1703.01632,
title = {Practical Advantages of Almost-Balanced-Weak-Values Metrological Techniques},
author = {Julián Martínez-Rincón and Zekai Chen and John C. Howell},
journal= {arXiv preprint arXiv:1703.01632},
year = {2017}
}