Coupling Nitrogen-Vacancy Centers in Diamond to Superconducting Flux Qubits
D. Marcos, Martijn Wubs, Jacob M. Taylor +3 more
We propose a method to achieve coherent coupling between nitrogen-vacancy (NV) centers in diamond and superconducting (SC) flux qubits. The resulting coupling can be used to create a coherent interaction between the spin states of distant NV centers mediated by the flux qubit. Furthermore, the magnetic coupling can be used to achieve a coherent transfer of quantum information between the flux qubit and an ensemble of NV centers. This enables a long-term memory for a SC quantum processor and possibly an interface between SC qubits and light.
arXiv:1001.4048•Physical Review Letters•Nov 17, 2010•258 citations