Practical Advantages of Almost-Balanced-Weak-Value Metrological Techniques

Authors

Julián Martínez-Rincón, University of Rochester
Zekai Chen, University of Rochester
John C. Howell, Chapman UniversityFollow

Document Type

Article

Publication Date

6-5-2017

Abstract

Precision measurements of ultrasmall linear velocities of one of the mirrors in a Michelson interferometer are performed using two different weak-value techniques. We show that the technique of almost-balanced weak values (ABWV) offers practical advantages over the technique of weak-value amplification, 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 h of integration time. The sensitivity of the Doppler shift due to the moving mirror is 150 nHz.

Comments

This article was originally published in Physical Review A, volume 95, issue 6, in 2017. https://doi.org/10.1103/PhysRevA.95.063804

Recommended Citation

J. Martínez-Rincón, Z. Chen, and J. C. Howell, Practical Advantages of Almost-Balanced-Weak-Value Metrological Techniques, Phys. Rev. A 95(6), 063804.

Peer Reviewed

1

Copyright

American Physical Society