Gravitational time dilation as a resource in quantum sensing
Quantum Physics
2023-03-15 v2 General Relativity and Quantum Cosmology
Abstract
Atomic clock interferometers are a valuable tool to test the interface between quantum theory and gravity, in particular via the measurement of gravitational time dilation in the quantum regime. Here, we investigate whether gravitational time dilation may be also used as a resource in quantum information theory. In particular, we show that for a freely falling interferometer and for a Mach-Zehnder interferometer, the gravitational time dilation may enhance the precision in estimating the gravitational acceleration for long interferometric times. To this aim, the interferometric measurements should be performed on both the path and the clock degrees of freedom.
Cite
@article{arxiv.2204.03006,
title = {Gravitational time dilation as a resource in quantum sensing},
author = {Carlo Cepollaro and Flaminia Giacomini and Matteo G. A. Paris},
journal= {arXiv preprint arXiv:2204.03006},
year = {2023}
}
Comments
6 pages main text, 3 pages appendices, 5 figures