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On-demand semiconductor source of entangled photons which simultaneously has high fidelity, efficiency, and indistinguishability

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arxiv 1903.06071 v1 pith:LSSMTVXD submitted 2019-03-14 quant-ph cond-mat.mtrl-sci

Hui Wang , Hai Hu , T.-H. Chung , Jian Qin , Xiaoxia Yang , J.-P. Li , R.-Z. Liu , H.-S. Zhong
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Y.-M. He Xing Ding Y.-H. Deng C. Schneider Qing Dai Y.-H. Huo Sven Höfling Chao-Yang Lu Jian-Wei Pan
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classification quant-phcond-mat.mtrl-sci
keywords photonquantumefficiencyentangledfidelityhighindistinguishabilitypair
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An outstanding goal in quantum optics and scalable photonic quantum technology is to develop a source that each time emits one and only one entangled photon pair with simultaneously high entanglement fidelity, extraction efficiency, and photon indistinguishability. By coherent two-photon excitation of a single InGaAs quantum dot coupled to a circular Bragg grating bullseye cavity with broadband high Purcell factor up to 11.3, we generate entangled photon pairs with a state fidelity of 0.90(1), pair generation rate of 0.59(1), pair extraction efficiency of 0.62(6), and photon indistinguishability of 0.90(1) simultaneously. Our work will open up many applications in high-efficiency multi-photon experiments and solid-state quantum repeaters.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A diode nanocavity for fast, efficient and tunable emission of highly entangled photon pairs and Fourier-transform-limited single photons

    quant-ph 2026-07 accept novelty 6.0 of 10

    A GaAs quantum dot in a p-i-n diode circular Bragg grating emits tunable entangled pairs (concurrence >0.89 over 1.6 nm) and nearly Fourier-limited indistinguishable single photons (V_HOM=0.951) with η_ext≈0.55 and F_P≈8.

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