Germanium-Vacancy Single Color Centers in Diamond
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Open Access
- 7 August 2015
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 5 (1), 12882
- https://doi.org/10.1038/srep12882
Abstract
Atomic-sized fluorescent defects in diamond are widely recognized as a promising solid state platform for quantum cryptography and quantum information processing. For these applications, single photon sources with a high intensity and reproducible fabrication methods are required. In this study, we report a novel color center in diamond, composed of a germanium (Ge) and a vacancy (V) and named the GeV center, which has a sharp and strong photoluminescence band with a zero-phonon line at 602 nm at room temperature. We demonstrate this new color center works as a single photon source. Both ion implantation and chemical vapor deposition techniques enabled fabrication of GeV centers in diamond. A first-principles calculation revealed the atomic crystal structure and energy levels of the GeV center.Keywords
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