| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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A Bright Single-Photon Source from Nitrogen-Vacancy Centers in Diamond Nanowires |
| Shen Li1,2, Cui-Hong Li1,3,4, Bo-Wen Zhao1,2, Yang Dong1,2, Cong-Cong Li1,2, Xiang-Dong Chen1,2, Ya-Song Ge3,4, Fang-Wen Sun1,2** |
1Key Lab of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026
2Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026
3Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029
4University of Chinese Academy of Sciences, Beijing 100049
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| Cite this article: |
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Shen Li, Cui-Hong Li, Bo-Wen Zhao et al 2017 Chin. Phys. Lett. 34 096101 |
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Abstract Single-photon flux is one of the crucial properties of nitrogen vacancy (NV) centers in diamond for its application in quantum information techniques. Here we fabricate diamond conical nanowires to enhance the single-photon count rate. Through the interaction between tightly confined optical mode in nanowires and NV centers, the single-photon lifetime is much shortened and the collection efficiency is enhanced. As a result, the detected single-photon rate can be at 564 kcps, and the total detection coefficient can be 0.8%, which is much higher than that in bulk diamond. Such a nanowire single-photon device with high photon flux can be applied to improve the fidelity of quantum computation and the precision of quantum sensors.
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Received: 30 March 2017
Published: 15 August 2017
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| PACS: |
61.72.-y
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(Defects and impurities in crystals; microstructure)
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42.50.Dv
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(Quantum state engineering and measurements)
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| Fund: Supported by the National Key Research and Development Program of China under Grant No 2017YFA0304504, and the National Natural Science Foundation of China under Grant Nos 11374290, 61522508, 91536219 and 11504363. |
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