| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5404138 | Journal of Luminescence | 2006 | 5 Pages |
Abstract
Optically active colour centres based on nickel-nitrogen impurities are observed in natural diamond under continuous-wave excitation. The spectral analysis shows that the single emitters have a narrow band emission in the near infrared, around 780Â nm, which is almost entirely concentrated in the zero phonon line even at room temperature. The colour centre excited-state lifetime is as short as 2Â ns, and the photoluminescence light is linear polarized. These striking features pave the way to the realization of a triggered single-photon source based on this colour centre emission well suited for open-air single-photon Quantum Key Distribution operating in day-light conditions.
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Authors
E Wu, V. Jacques, F. Treussart, H. Zeng, P. Grangier, J.-F. Roch,