High-quality photonic entanglement for wavelength-multiplexed quantum communication based on a silicon chip

We report an efficient energy-time entangled photon-pair source based on four-wave mixing in a CMOS-compatible silicon photonics ring resonator. Thanks to suitable optimization, the source shows a large spectral brightness of 400\,pairs of entangled photons /s/MHz for \(\rm 500\,\mu W\) pump power....

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Veröffentlicht in:arXiv.org 2017-02
Hauptverfasser: Mazeas, Florent, Traetta, Michele, Bentivegna, Marco, Kaiser, Florian, Aktas, Djeylan, Zhang, Weiwei, Carlos Alonso Ramos, Bin-Ngah, Lutfi-Arif, Lunghi, Tommaso, Picholle, Éric, Belabas-Plougonven, Nadia, Xavier Le Roux, Cassan, Éric, Marris-Morini, Delphine, Laurent, Vivien, Sauder, Grégory, Labonté, Laurent, Tanzilli, Sébastien
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Sprache:eng
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Zusammenfassung:We report an efficient energy-time entangled photon-pair source based on four-wave mixing in a CMOS-compatible silicon photonics ring resonator. Thanks to suitable optimization, the source shows a large spectral brightness of 400\,pairs of entangled photons /s/MHz for \(\rm 500\,\mu W\) pump power. Additionally, the resonator has been engineered so as to generate a frequency comb structure compatible with standard telecom dense wavelength division multiplexers. We demonstrate high-purity energy-time entanglement, i.e., free of photonic noise, with near perfect raw visibilities (\(>\)~98\%) between various channel pairs in the telecom C-band. Such a compact source stands as a path towards more complex quantum photonic circuits dedicated to quantum communication systems.
ISSN:2331-8422
DOI:10.48550/arxiv.1609.00521