Coupling Nitrogen-Vacancy Centers in Diamond to Superconducting Flux Qubits
D. Marcos, M. Wubs, J. M. Taylor, R. Aguado, M. D. Lukin, A. S. Sørensen
DOI 10.1103/PhysRevLett.105.210501 · Physical Review Letters
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Abstract
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.
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