On-demand semiconductor single-photon source with near-unity indistinguishability. He, Y., He, Y., Wei, Y., Wu, D., Atatüre, M., Schneider, C., Höfling, S., Kamp, M., Lu, C., & Pan, J. Nature Nanotechnology, 8(3):213–217, March, 2013. Number: 3 Publisher: Nature Publishing Group
On-demand semiconductor single-photon source with near-unity indistinguishability [link]Paper  doi  abstract   bibtex   
Single-photon sources based on semiconductor quantum dots offer distinct advantages for quantum information, including a scalable solid-state platform, ultrabrightness and interconnectivity with matter qubits. A key prerequisite for their use in optical quantum computing and solid-state networks is a high level of efficiency and indistinguishability. Pulsed resonance fluorescence has been anticipated as the optimum condition for the deterministic generation of high-quality photons with vanishing effects of dephasing. Here, we generate pulsed single photons on demand from a single, microcavity-embedded quantum dot under s-shell excitation with 3 ps laser pulses. The π pulse-excited resonance-fluorescence photons have less than 0.3% background contribution and a vanishing two-photon emission probability. Non-postselective Hong–Ou–Mandel interference between two successively emitted photons is observed with a visibility of 0.97(2), comparable to trapped atoms and ions. Two single photons are further used to implement a high-fidelity quantum controlled-NOT gate.
@article{he_-demand_2013,
	title = {On-demand semiconductor single-photon source with near-unity indistinguishability},
	volume = {8},
	copyright = {2013 Nature Publishing Group},
	issn = {1748-3395},
	url = {https://www.nature.com/articles/nnano.2012.262},
	doi = {10.1038/nnano.2012.262},
	abstract = {Single-photon sources based on semiconductor quantum dots offer distinct advantages for quantum information, including a scalable solid-state platform, ultrabrightness and interconnectivity with matter qubits. A key prerequisite for their use in optical quantum computing and solid-state networks is a high level of efficiency and indistinguishability. Pulsed resonance fluorescence has been anticipated as the optimum condition for the deterministic generation of high-quality photons with vanishing effects of dephasing. Here, we generate pulsed single photons on demand from a single, microcavity-embedded quantum dot under s-shell excitation with 3 ps laser pulses. The π pulse-excited resonance-fluorescence photons have less than 0.3\% background contribution and a vanishing two-photon emission probability. Non-postselective Hong–Ou–Mandel interference between two successively emitted photons is observed with a visibility of 0.97(2), comparable to trapped atoms and ions. Two single photons are further used to implement a high-fidelity quantum controlled-NOT gate.},
	language = {en},
	number = {3},
	urldate = {2021-01-13},
	journal = {Nature Nanotechnology},
	author = {He, Yu-Ming and He, Yu and Wei, Yu-Jia and Wu, Dian and Atatüre, Mete and Schneider, Christian and Höfling, Sven and Kamp, Martin and Lu, Chao-Yang and Pan, Jian-Wei},
	month = mar,
	year = {2013},
	note = {Number: 3
Publisher: Nature Publishing Group},
	pages = {213--217},
}

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