Bright Single-Photon Source at 1.3 μm Based on InAs Bilayer Quantum Dot in Micropillar

Nanoscale Research Letters

Jin-Liang Wang¹  Ze-Sheng Chen¹  Zhi-Chuan Niu²  Ben Ma²  Xiang-Jun Shang²  Hai-Qiao Ni² 

[1] School of Physics and Nuclear Energy Engineering, Beihang University;State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences;

关键词: Telecom wavelength;    Single-photon source;    High emission rate;    Micropillar;   

DOI  :  10.1186/s11671-017-2153-2

来源: DOAJ

【 摘 要 】

Abstract A pronounced high count rate of single-photon emission at the wavelength of 1.3 μm that is capable of fiber-based quantum communication from InAs/GaAs bilayer quantum dots coupled with a micropillar (diameter ~3 μm) cavity of distributed Bragg reflectors was investigated, whose photon extraction efficiency has achieved 3.3%. Cavity mode and Purcell enhancement have been observed clearly in microphotoluminescence spectra. At the detection end of Hanbury-Brown and Twiss setup, the two avalanched single-photon counting modules record a total count rate of ~62,000/s; the time coincidence counting measurement demonstrates single-photon emission, with the multi-photon emission possibility, i.e., g 2(0), of only 0.14.

【 授权许可】

Unknown