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.
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.
作者
Shen Li
Cui-Hong Li
Bo-Wen Zhao
Yang Dong
Cong-Cong Li
Xiang-Dong Chen
Ya-Song Ge
Fang-Wen Sun
李燊;李翠红;赵博文;董杨;李聪丛;陈向东;葛亚松;孙方稳(Key Lab of Quantum Information,Chinese Academy of Sciences,University of Science and Technology of China;Synergetic Innovation Center of Quantum Information and Quantum Physics,University of Science and Technology of China;Institute of Geology and Geophysics,Chinese Academy of Sciences;University of Chinese Academy of Sciences)
基金
Supported by the National Key Research and Development Program of China under Grant No 2017YFA0304504
the National Natural Science Foundation of China under Grant Nos 11374290,61522508,91536219 and 11504363
