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Quantum frequency down-conversion of single photons at 1552 nm from single InAs quantum dot |
| Ben Ma(马奔)1,2,3, Si-Hang Wei(魏思航)1,2,3, Ze-Sheng Chen(陈泽升)1,2,3, Xiang-Jun Shang(尚向军)1,2,3, Hai-Qiao Ni(倪海桥)1,2,3, Zhi-Chuan Niu(牛智川)1,2,3 |
1 State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
2 College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 101418, China;
3 Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China |
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Abstract Near-infrared single photon sources in telecommunication bands, especially at 1550 nm, are required for long-distance quantum communication. Here a down-conversion quantum interface is implemented, where the single photons emitted from single InAs quantum dot at 864 nm is down converted to 1552 nm by using a fiber-coupled periodically poled lithium niobate (PPLN) waveguide and a 1.95 μm pump laser, and the frequency conversion efficiency is~40%. The single-photon purity of quantum dot emission is preserved during the down-conversion process, i.e., g(2)(0), only 0.22 at 1552 nm. This present technique advances the Ⅲ-V semiconductor quantum dots as a promising platform for long-distance quantum communication.
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Received: 18 May 2018
Revised: 08 June 2018
Accepted manuscript online:
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PACS:
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78.67.Hc
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(Quantum dots)
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81.07.Ta
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(Quantum dots)
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73.21.La
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(Quantum dots)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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| Fund: Project supported by the National Key Technologies R&D Program of China (Grant No. 2018YFA0306101), the Scientific Instrument Developing Project of Chinese Academy of Sciences (Grant No. YJKYYQ20170032), and the National Natural Science Foundation of China (Grant No. 61505196). |
Corresponding Authors:
Zhi-Chuan Niu
E-mail: zcniu@semi.ac.cn
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Cite this article:
Ben Ma(马奔), Si-Hang Wei(魏思航), Ze-Sheng Chen(陈泽升), Xiang-Jun Shang(尚向军), Hai-Qiao Ni(倪海桥), Zhi-Chuan Niu(牛智川) Quantum frequency down-conversion of single photons at 1552 nm from single InAs quantum dot 2018 Chin. Phys. B 27 097802
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