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Photonic Quantum Computing

Pure narrowband photon-pair generation in a monolithic cavity

arXiv

Authors: Xavier Barcons Planas, Helen M. Chrzanowski, Janik Wolters

Year

2026

Paper ID

2865

Status

Preprint

Abstract Read

~2 min

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Abstract

Photonic quantum technologies require efficient sources of pure single photons. Here we present a heralded SPDC single-photon source in a monolithic cavity optimized for high spectral and spatial purity. The source heralds single-photons at a wavelength of 1540 nm and a spectral bandwidth of 168 MHz with a maximum heralding efficiency of 84%, while keeping the multi-photon contamination below 3%. The cavity enhancement generates photons mainly in the central cavity mode with 96.2% spectral purity.

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This paper contributes to the Photonic Quantum Computing research area in the Quantum Articles archive.
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Photonic quantum technologies require efficient sources of pure single photons.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2602.04646 [2] arXiv https://arxiv.org/abs/2602.04646 [3] Publisher https://arxiv.org/abs/2602.04646

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External citation index: OpenAlex citation signal • updated 2026-06-12 02:04:27

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