Coupling Nitrogen-Vacancy Centers in Diamond to Superconducting Flux Qubits

D. Marcos, M. Wubs, J. M. Taylor, R. Aguado, M. D. Lukin, and A. S. Sørensen
Phys. Rev. Lett. 105, 210501 – Published 17 November 2010
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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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  • Received 24 January 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.210501

© 2010 The American Physical Society

Authors & Affiliations

D. Marcos1, M. Wubs2,3, J. M. Taylor4, R. Aguado1, M. D. Lukin5, and A. S. Sørensen2

  • 1Theory and Simulation of Materials Department, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco 28049, Madrid, Spain
  • 2QUANTOP, The Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen Ø, Denmark
  • 3Department of Photonics Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
  • 4Joint Quantum Institute and the National Institute of Standards and Technology, College Park, Maryland 20742, USA
  • 5Department of Physics, Harvard University, Cambridge Massachusetts 02138, USA

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Issue

Vol. 105, Iss. 21 — 19 November 2010

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