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Deterministic and Robust Generation of Single Photons from a Single Quantum Dot with 99.5% Indistinguishability Using Adiabatic Rapid Passage

Single photons are attractive candidates of quantum bits (qubits) for quantum computation and are the best messengers in quantum networks. Future scalable, fault-tolerant photonic quantum technologies demand both stringently high levels of photon indistinguishability and generation efficiency. Here,...

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Bibliographic Details
Published in:Nano letters 2014-11, Vol.14 (11), p.6515-6519
Main Authors: Wei, Yu-Jia, He, Yu-Ming, Chen, Ming-Cheng, Hu, Yi-Nan, He, Yu, Wu, Dian, Schneider, Christian, Kamp, Martin, Höfling, Sven, Lu, Chao-Yang, Pan, Jian-Wei
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Language:English
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Summary:Single photons are attractive candidates of quantum bits (qubits) for quantum computation and are the best messengers in quantum networks. Future scalable, fault-tolerant photonic quantum technologies demand both stringently high levels of photon indistinguishability and generation efficiency. Here, we demonstrate deterministic and robust generation of pulsed resonance fluorescence single photons from a single semiconductor quantum dot using adiabatic rapid passage, a method robust against fluctuation of driving pulse area and dipole moments of solid-state emitters. The emitted photons are background-free, have a vanishing two-photon emission probability of 0.3% and a raw (corrected) two-photon Hong–Ou–Mandel interference visibility of 97.9% (99.5%), reaching a precision that places single photons at the threshold for fault-tolerant surface-code quantum computing. This single-photon source can be readily scaled up to multiphoton entanglement and used for quantum metrology, boson sampling, and linear optical quantum computing.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl503081n