Chromium single-photon emitters in diamond fabricated by ion implantation

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Journal Article
Physical Review B - Condensed Matter and Materials Physics, 2010, 81 (12)
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Controlled fabrication and identification of bright single-photon emitters is at the heart of quantum optics. Here we demonstrate controlled engineering of a chromium bright single-photon source in bulk diamond by ion implantation. The Cr center has fully polarized emission with a zero-phonon line centered at 749 nm, full width at half maximum of 4 nm, an extremely short lifetime of ∼1ns, and a count rate of 0.5× 106 counts/s. By combining the polarization measurements and the vibronic spectra, a model of the center has been proposed consisting of one interstitial chromium atom with a transition dipole along one of the 〈100〉 directions. © 2010 The American Physical Society.
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