Quantum-information transfer with nitrogen-vacancy centers coupled to a whispering-gallery microresonator

Abstract

We propose an efficient scheme for the realization of quantum information transfer and entanglement with nitrogen-vacancy (N-$V$) centers coupled to a high-$Q$ whispering-gallery mode (WGM) microresonator. We show that based on the effective dipole-dipole interaction between the N-$V$ centers mediated by the WGM, quantum information can be transferred between the N-$V$ centers through Raman transitions combined with laser fields. This protocol may open up promising possibilities for quantum communications with the solid-state quantum electrodynamic cavity system.