Nonclassical photon statistics in a single nickel-nitrogen diamond color center photoluminescence at room temperature

The photoluminescence of a single nickel-nitrogen NE8 color center in a diamond nanocrystal is investigated at room temperature under pulsed excitation by scanning confocal optical microscopy. Photon arrival times are analyzed in terms of the temporal intensity correlation function. Antibunching at...

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Bibliographic Details
Published in:Journal of modern optics 2008-01, Vol.55 (17), p.2893-2901
Main Authors: Wu, E, Rabeau, J.R., Treussart, F., Zeng, H., Grangier, P., Prawer, S., Roch, J.-F.
Format: Article
Language:English
Subjects:
color center
diamond
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
nanocrystals
Optics
Photon statistics and coherence theory
Physics
quantum key distribution
Quantum optics
Quantum Physics
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Summary:The photoluminescence of a single nickel-nitrogen NE8 color center in a diamond nanocrystal is investigated at room temperature under pulsed excitation by scanning confocal optical microscopy. Photon arrival times are analyzed in terms of the temporal intensity correlation function. Antibunching at short times and bunching behavior for longer times is observed, associated with sub- and super-Poissonian statistics, respectively. The behavior is interpreted by a 'on-off' state model, and transition rates between these two states are inferred from intensity correlation measurements realized at different excitation powers. NE8 color center photoluminescence quantum yield is evaluated to be 65%, a value higher than achieved for a nitrogen-vacancy color center, which is, up to now, the most practical single emitter to build a reliable single-photon source at room temperature.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340802267118