Implementation of the Dicke lattice model in hybrid quantum system arrays
Abstract
Generalized Dicke models can be implemented in hybrid quantum systems built from ensembles of nitrogen-vacancy (NV) centers in diamond coupled to superconducting microwave cavities. By engineering cavity assisted Raman transitions between two spin states of the NV defect, a fully tunable model for collective light-matter interactions in the ultra-strong coupling limit can be obtained. Our analysis of the resulting non-equilibrium phases for a single cavity and for coupled cavity arrays shows that different superradiant phase transitions can be observed using existing experimental technologies, even in the presence of large inhomogeneous broadening of the spin ensemble. The phase diagram of the Dicke lattice model displays distinct features induced by dissipation, which can serve as a genuine experimental signature for phase transitions in driven open quantum systems.
Keywords
Cite
@article{arxiv.1405.3289,
title = {Implementation of the Dicke lattice model in hybrid quantum system arrays},
author = {Liujun Zou and David Marcos and Sebastian Diehl and Stefan Putz and Jörg Schmiedmayer and Johannes Majer and Peter Rabl},
journal= {arXiv preprint arXiv:1405.3289},
year = {2014}
}
Comments
4+1 pages, 3 figures and supplementary material