A cavity-QED protocol for precise field sensing in the optical domain
Abstract
In the context of quantum metrology, optical cavity-QED platforms have primarily been focused on the generation of entangled atomic spin states useful for next-generation frequency and time standards. Here, we report a complementary application: The use of optical cavities to generate non-classical states of light for electric field sensing below the standard quantum limit. We show that cooperative atom-light interactions in the strong collective coupling regime can be used to engineer generalized atom-light cat states which enable quantum enhanced sensing of small displacements of the cavity field even in the presence of photon loss. We demonstrate that metrological gains of 10-20 dB below the standard quantum limit are within reach for current cavity-QED systems operating with long-lived alkaline-earth atoms.
Cite
@article{arxiv.1909.07524,
title = {A cavity-QED protocol for precise field sensing in the optical domain},
author = {Robert J. Lewis-Swan and D. Barberena and Juan A. Muniz and Julia R. K. Cline and Dylan Young and James K. Thompson and Ana Maria Rey},
journal= {arXiv preprint arXiv:1909.07524},
year = {2020}
}
Comments
6 pages, 3 figures