Dynamic stabilization of the optical resonances of single nitrogen-vacancy centers in diamond.
Phys Rev Lett
; 108(20): 206401, 2012 May 18.
Article
in En
| MEDLINE
| ID: mdl-23003160
ABSTRACT
We report electrical tuning by the Stark effect of the excited-state structure of single nitrogen-vacancy (NV) centers located â²100 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 â³100 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.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2012
Document type:
Article
Affiliation country:
United States