Physics – Quantum Physics
Scientific paper
2005-12-04
Optics express 14, 3 (2006) 1296-1303
Physics
Quantum Physics
9 pages
Scientific paper
10.1364/OE.14.001296
We report on the observation of single colour centers in natural diamond samples emitting in the near infrared region when optically excited. Photoluminescence of these single emitters have several striking features, such as a narrow-band fully polarized emission (FWHM 2 nm) around 780 nm, a short excited-state lifetime of about 2 ns, and perfect photostability at room temperature under our excitation conditions. We present a detailed study of their photophysical properties. Development of a triggered single-photon source relying on this single colour centre is discussed in the prospect of its application to quantum key distribution.
Grangier Philippe
Jacques Vincent
Roch Jean-Francois
Treussart Francois
Wu Edward
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