Dissipative Phase Transition in Central Spin Systems
Abstract
We investigate dissipative phase transitions in an open central spin system. In our model the central spin interacts coherently with the surrounding many-particle spin environment and is subject to coherent driving and dissipation. We develop analytical tools based on a self-consistent Holstein-Primakoff approximation that enable us to determine the complete phase diagram associated with the steady states of this system. It includes first and second-order phase transitions, as well as regions of bistability, spin squeezing and altered spin pumping dynamics. Prospects of observing these phenomena in systems such as electron spins in quantum dots or NV centers coupled to lattice nuclear spins are briefly discussed.
Cite
@article{arxiv.1205.3341,
title = {Dissipative Phase Transition in Central Spin Systems},
author = {Eric M. Kessler and Geza Giedke and Atac Imamoglu and Susanne F. Yelin and Mikhail D. Lukin and J. Ignacio Cirac},
journal= {arXiv preprint arXiv:1205.3341},
year = {2012}
}
Comments
23 pages, 11 figures, typos corrected