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

Hui Wang; Z-C Duan; Y-H Li; Si Chen; J-P Li; Y-M He; M-C Chen; Yu He; X Ding; Cheng-Zhi Peng; Christian Schneider; Martin Kamp; Sven Höfling; Chao-Yang Lu; Jian-Wei Pan

doi:10.1103/PhysRevLett.116.213601

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

Phys Rev Lett. 2016 May 27;116(21):213601. doi: 10.1103/PhysRevLett.116.213601. Epub 2016 May 27.

Authors

Hui Wang^{1

2

3}, Z-C Duan^{1

2

3}, Y-H Li^{1

2

3}, Si Chen^{1

2

3}, J-P Li^{1

2

3}, Y-M He^{1

4}, M-C Chen^{1

2

3}, Yu He^{1

2

3}, X Ding^{1

2

3}, Cheng-Zhi Peng^{1

2

3}, Christian Schneider⁴, Martin Kamp⁴, Sven Höfling^{1

4

5}, Chao-Yang Lu^{1

2

3}, Jian-Wei Pan^{1

2

3}

Affiliations

¹ Shanghai Branch, National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Shanghai 201315, China.
² CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
³ CAS-Alibaba Quantum Computing Laboratory, Shanghai 201315, China.
⁴ Technische Physik, Physikalisches Instität and Wilhelm Conrad Röntgen-Center for Complex Material Systems, Universitat Würzburg, Am Hubland, D-97074 Wüzburg, Germany.
⁵ SUPA, School of Physics and Astronomy, University of St. Andrews, St. Andrews KY16 9SS, United Kingdom.

PMID: 27284656
DOI: 10.1103/PhysRevLett.116.213601

Abstract

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.