Single photon emission from silicon-vacancy colour centres in chemical vapour deposition nano-diamonds on iridium
نویسندگان
چکیده
We introduce a process for the fabrication of high-quality, spatially isolated nano-diamonds on iridium via microwave-plasma-assisted chemical vapour deposition (CVD) growth. We perform spectroscopy of single siliconvacancy (SiV) centres produced during the growth of the nano-diamonds. The colour centres exhibit extraordinary narrow zero-phonon-lines down to 0.7 nm at room temperature. Single photon count rates up to 4.8Mcps at saturation make these SiV centres the brightest diamond-based single photon sources to date. We measure for the first time the fine structure of a single SiV centre, thus confirming the atomic composition of the investigated colour centres. 3 Author to whom any correspondence should be addressed. New Journal of Physics 13 (2011) 025012 1367-2630/11/025012+21$33.00 © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
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