Near-Transform-Limited Single Photons from an Efficient Solid-State Quantum Emitter

• Published in: Physical review letters Vol. 116; no. 21; p. 213601
• Main Authors: Wang, Hui, Duan, Z-C, Li, Y-H, Chen, Si, Li, J-P, He, Y-M, Chen, M-C, He, Yu, Ding, X, Peng, Cheng-Zhi, Schneider, Christian, Kamp, Martin, Höfling, Sven, Lu, Chao-Yang, Pan, Jian-Wei
• Format: Journal Article
• Language: English
• Published: United States 27-05-2016
• Subjects: Emission; Impact tests; Photons; Resonance fluorescence; Spectra; Streams; Time; Transforms
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/physrevlett.116.213601

By pulsed s-shell resonant excitation of a single quantum dot-micropillar system, we generate long streams of 1000 near-transform-limited single photons with high mutual indistinguishability. The Hong-Ou-Mandel interference of two photons is measured as a function of their emission time separation varying from 13 ns to 14.7  μs, where the visibility slightly drops from 95.9(2)% to a plateau of 92.1(5)% through a slow dephasing process occurring at a time scale of 0.7  μs. A temporal and spectral analysis reveals the pulsed resonance fluorescence single photons are close to the transform limit, which are readily useful for multiphoton entanglement and interferometry experiments.