Compact and efficient quantum frequency conversion of a fiber-pigtailed single-photon source
- URL: http://arxiv.org/abs/2512.09390v1
- Date: Wed, 10 Dec 2025 07:35:58 GMT
- Title: Compact and efficient quantum frequency conversion of a fiber-pigtailed single-photon source
- Authors: Mathis Cohen, Anthony Martin, Romain Dalidet, Florian Pastier, Marie Billard, Aristide Lemaitre, Valérian Giesz, Niccolo Somaschi, Sarah Thomas, Pascale Senellart-Mardon, Sébastien Tanzilli, Laurent Labonté,
- Abstract summary: We report a fiber-coupled nonlinear optical Lithium Niobate waveguide with a fiber-pigtailed single-photon source based on semiconductor quantum dots.<n>Single and indistinguishable photons are converted from 925.7 nm to the telecommunication C-band, with a 48.4% end-to-end efficiency.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum frequency converters are key enabling technologies in photonic quantum information science to bridge the gap between quantum emitters and telecom photons. Here, we report a co- herent frequency converter scheme combining a fiber-coupled nonlinear optical Lithium Niobate waveguide with a fiber-pigtailed single-photon source based on semiconductor quantum dots. Single and indistinguishable photons are converted from 925.7 nm to the telecommunication C-band, with a 48.4% end-to-end efficiency and full preservation of single-photon purity and indistinguishability. The integration of the two fiber-based modules achieving top-level performance represents an im- portant step toward the practical interconnection of future quantum information processing systems operating at different wavelengths.
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