中国物理B ›› 2018, Vol. 27 ›› Issue (9): 97802-097802.doi: 10.1088/1674-1056/27/9/097802
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
Quantum frequency down-conversion of single photons at 1552 nm from single InAs quantum dot
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)
- 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
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
摘要：
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.
中图分类号: (Quantum dots)
- 78.67.Hc