Heisenberg-limited noisy atomic clock using a hybrid coherent and squeezed states protocol
Quantum Physics
2020-11-25 v1
Abstract
We propose a hybrid quantum-classical atomic clock protocol where the interrogation of an ensemble of uncorrelated atoms in a spin-coherent state is used to feedback one (or more) spin-squeezed atomic ensembles toward their optimal phase sensitivity point. This protocol overcomes the stability of a single Ramsey clock and it reaches a Heisenberg-limited stability while avoiding non-destructive measurements. Analytical predictions are compared with numerical simulations of clocks operations including correlated 1/f local oscillator noise.
Keywords
Cite
@article{arxiv.2003.10943,
title = {Heisenberg-limited noisy atomic clock using a hybrid coherent and squeezed states protocol},
author = {Luca Pezzè and Augusto Smerzi},
journal= {arXiv preprint arXiv:2003.10943},
year = {2020}
}
Comments
6 pages, 3 figures