Near-Transform-Limited Single Photons from an Efficient Solid-State Quantum Emitter
Hui Wang, Z.-C. Duan, Y.-H. Li, Si Chen, Jian Li, Yu He, M.-C. Chen, Yu He, Xing Ding, Cheng-Zhi Peng, Christian Schneider, Martin Kamp, Sven Höfling, Chao‐Yang Lu, Jian-Wei Pan · Physical Review Letters · 2016
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.