Stable single photon source in near infrared

Abstract

Owing to their unsurpassed photostability, defects in solids may be ideal candidates for single photon sources. Here we report on generation of single photons by optical excitation of a yet unexplored defect in diamond, the nickel-nitrogen complex (NE8) centre. The most striking feature of the defect is its emission bandwidth of 1.2 nm at room temperature. The emission wavelength of the defect is around 800 nm, which is suitable for telecom fibres. In addition, in this spectral region little background light from the diamond bulk material is detected. Consequently, a high contrast in antibunching measurements is achieved.

8 pages, 4 figures

References in corpus (3)

• Quantum Cryptography
• Photon antibunching in the fluorescence of individual color centers in diamond
• Nonclassical radiation from diamond nanocrystals

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