Entanglement of nitrogen-vacancy-center ensembles using transmission line resonators and a superconducting phase qubit

Abstract

We propose a potentially practical scheme for creating entanglement between two distant nitrogen-vacancy-center (N-V) spin ensembles using a current-biased Josephson junction superconducting qubit and transmission line resonators. The idea provides a scalable way to an N-V ensemble-based quantum network, which is close to the reach with currently available technology.