Dynamic stabilization of the optical resonances of single nitrogen-vacancy centers in diamond.

We report electrical tuning by the Stark effect of the excited-state structure of single nitrogen-vacancy (NV) centers located ≲100  nm from the diamond surface. The zero-phonon line (ZPL) emission frequency is controllably varied over a range of 300 GHz. Using high-resolution emission spectroscopy, we observe electrical tuning of the strengths of both cycling and spin-altering transitions. Under resonant excitation, we apply dynamic feedback to stabilize the ZPL frequency. The transition is locked over several minutes and drifts of the peak position on timescales ≳100  ms are reduced to a fraction of the single-scan linewidth, with standard deviation as low as 16 MHz (obtained for an NV in bulk, ultrapure diamond). These techniques should improve the entanglement success probability in quantum communications protocols.

[1]  Andrew G. Glen,et al.  APPL , 2001 .

[2]  J. Gilman,et al.  Nanotechnology , 2001 .

[3]  John B. Shoven,et al.  I , Edinburgh Medical and Surgical Journal.

[4]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[5]  E. LESTER SMITH,et al.  AND OTHERS , 2005 .

[6]  W. Marsden.  I and J , 2012 .

[7]  R. Rosenfeld.  Nature , 2009, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery.