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Phys. Rev. Lett. 97, 247401 (2006) [4 pages]

Coherent Population Trapping of Single Spins in Diamond under Optical Excitation

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Charles Santori1,*, Philippe Tamarat2, Philipp Neumann2, Jörg Wrachtrup2, David Fattal1, Raymond G. Beausoleil1, James Rabeau3, Paolo Olivero3, Andrew D. Greentree3,4, Steven Prawer3,4, Fedor Jelezko2, and Philip Hemmer5
1Hewlett-Packard Laboratories, 1501 Page Mill Rd., Palo Alto, California 94304, USA
23. Physikalisches Institut, Universität Stuttgart, 70550 Stuttgart, Germany
3School of Physics, University of Melbourne, Victoria, Australia, 3010
4Centre of Excellence for Quantum Computer Technology, School of Physics, University of Melbourne, Victoria, Australia, 3010
5Electrical & Computer Engineering Department, Texas A&M University, College Station, Texas 77843, USA

Received 20 July 2006; published 13 December 2006

Coherent population trapping is demonstrated in single nitrogen-vacancy centers in diamond under optical excitation. For sufficient excitation power, the fluorescence intensity drops almost to the background level when the laser modulation frequency matches the 2.88 GHz splitting of the ground states. The results are well described theoretically by a four-level model, allowing the relative transition strengths to be determined for individual centers. The results show that all-optical control of single spins is possible in diamond.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.97.247401
DOI:
10.1103/PhysRevLett.97.247401
PACS:
78.67.Bf, 03.67.−a, 42.50.Gy, 72.25.Fe

*Electronic address: charles.santori@hp.com

 
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