%0 Journal Article
%T Ultrasensitive Atomic clock with single-mode number-squeezing
%A L. Pezze
%A A. Smerzi
%J Physics
%D 2010
%I arXiv
%X We show that the sensitivity of an atomic clock can be enhanced below the shot-noise level by initially squeezing, and then measuring in output, the population of a single atomic level. This can simplify current experimental protocols which requires squeezing of the relative number of particles of the two populated states. We finally study, as a specific application, the clock sensitivity obtained with a single mode quantum non-demolition measurement.
%U http://arxiv.org/abs/1004.5486v1