Dissipative transverse-field Ising model: steady-state correlations and spin squeezing
Quantum Physics
2013-12-05 v2 Quantum Gases
Chaotic Dynamics
Abstract
We study the transverse-field Ising model with infinite-range coupling and spontaneous emission on every site. We find that there is spin squeezing in steady state due to the presence of the transverse field. This means that there is still entanglement, despite the decoherence from spontaneous emission. We analytically calculate fluctuations beyond mean-field theory using a phase-space approach, which involves converting the master equation into a Fokker-Planck equation for the Wigner function. Our calculations are relevant to current experiments with trapped ions.
Cite
@article{arxiv.1309.3255,
title = {Dissipative transverse-field Ising model: steady-state correlations and spin squeezing},
author = {Tony E. Lee and Ching-Kit Chan},
journal= {arXiv preprint arXiv:1309.3255},
year = {2013}
}
Comments
9 pages, 3 figures