A Bright Single-Photon Source from Nitrogen-Vacancy Centers in Diamond Nanowires

被引：9
|
作者：
Li, Shen [1 ,2 ]
Li, Cui-Hong [1 ,3 ,4 ]
Zhao, Bo-Wen [1 ,2 ]
Dong, Yang [1 ,2 ]
Li, Cong-Cong [1 ,2 ]
Chen, Xiang-Dong [1 ,2 ]
Ge, Ya-Song [3 ,4 ]
Sun, Fang-Wen [1 ,2 ]
机构：
[1] Univ Sci & Technol China, Key Lab Quantum Informat, Chinese Acad Sci, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum, Hefei 230026, Anhui, Peoples R China
[3] Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2017年 / 34卷 / 09期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1088/0256-307X/34/9/096101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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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页数：4
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