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arXiv · 1503.04938

A Germanium-Vacancy Single Photon Source in Diamond

Takayuki Iwasaki·Fumitaka Ishibashi·Yoshiyuki Miyamoto·Yuki Doi·Satoshi Kobayashi·Takehide Miyazaki·Kosuke Tahara·Kay D. Jahnke·Lachlan J. Rogers·Boris Naydenov·Fedor Jelezko·Satoshi Yamasaki·Shinji Nagamachi·Toshiro Inubushi·Norikazu Mizuochi·Mutsuko Hatano
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Abstract

Color centers 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. Here, 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.

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Takayuki Iwasaki, Fumitaka Ishibashi, Yoshiyuki Miyamoto, Yuki Doi, Satoshi Kobayashi, Takehide Miyazaki, Kosuke Tahara, Kay D. Jahnke, Lachlan J. Rogers, Boris Naydenov, Fedor Jelezko, Satoshi Yamasaki, Shinji Nagamachi, Toshiro Inubushi, Norikazu Mizuochi, Mutsuko Hatano. 2015-03-17. A Germanium-Vacancy Single Photon Source in Diamond. https://arxiv.org/abs/1503.04938

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