Germanium-Vacancy Single Color Centers in Diamond

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...

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Detalles Bibliográficos
Autores principales: Iwasaki, Takayuki, Ishibashi, Fumitaka, Miyamoto, Yoshiyuki, Doi, Yuki, Kobayashi, Satoshi, Miyazaki, Takehide, Tahara, Kosuke, Jahnke, Kay D., Rogers, Lachlan J., Naydenov, Boris, Jelezko, Fedor, Yamasaki, Satoshi, Nagamachi, Shinji, Inubushi, Toshiro, Mizuochi, Norikazu, Hatano, Mutsuko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4528202/
https://www.ncbi.nlm.nih.gov/pubmed/26250337
http://dx.doi.org/10.1038/srep12882
Descripción
Sumario: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.

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