Dicke-like quantum phase transition and vacuum entanglement with two coupled atomic ensembles
Optics
2012-02-27 v1 Quantum Physics
Abstract
We study the coherent cooperative phenomena of the system composed of two interacting atomic ensembles in the thermodynamic limit. Remarkably, the system exhibits the Dicke-like quantum phase transition and entanglement behavior although the governing Hamiltonian is fundamentally different from the spin-boson Dicke Hamiltonian, offering the opportunity for investigating collective matter-light dynamics with pure matter waves. The model can be realized with two Bose-Einstein condensates or atomic ensembles trapped in two optical cavities coupled to each other. The interaction between the two separate samples is induced by virtual photon exchange.
Keywords
Cite
@article{arxiv.1202.5422,
title = {Dicke-like quantum phase transition and vacuum entanglement with two coupled atomic ensembles},
author = {Shi-Biao Zheng},
journal= {arXiv preprint arXiv:1202.5422},
year = {2012}
}