We present a novel scheme for the generation of entangled states of two spatially separated nitrogen-vacancy (NV) centers with two whispering-gallery-mode (WGM) microresonators, which are coupled either by an optical fiber-taper waveguide, or by the evanescent fields of the WGM. We show that, the steady state of the two NV centers can be steered into a singlet-like state through a dissipative quantum dynamical process, where the cavity decay plays a positive role and can help drive the system to the target state. The protocol may open up promising perspectives for quantum communications and computations with this solid-state cavity quantum electrodynamic system.
@article{arxiv.1110.6718,
title = {Dissipative preparation of entangled states between two spatially separated nitrogen-vacancy centers},
author = {Peng-Bo Li and Shao-Yan Gao and Hong-Rong Li and Sheng-Li Ma and Fu-Li Li},
journal= {arXiv preprint arXiv:1110.6718},
year = {2012}
}