Squeezed many-body states of atoms are a valuable resource for high precision frequency metrology and could tremendously boost the performance of atomic lattice clocks. Here, we theoretically demonstrate a viable approach to spin squeezing in lattice clocks via optical dressing of one clock state to a highly excited Rydberg state, generating switchable atomic interactions. For realistic experimental parameters, this is shown to generate over 10 dB of squeezing in a few microseconds interaction time without affecting the subsequent clock interrogation.
@article{arxiv.1306.6240,
title = {Spin squeezing in a Rydberg lattice clock},
author = {L. I. R. Gil and R. Mukherjee and E. M. Bridge and M. P. A. Jones and T. Pohl},
journal= {arXiv preprint arXiv:1306.6240},
year = {2016}
}