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arXiv · 2001.01510

Raman-free fibered photon-pair source

Martin Cordier·Philippe Delaye·Frédéric Gérôme·Fetah Benabid·Isabelle Zaquine
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Abstract

Raman-scattering noise in silica has been the key obstacle toward the realisation of high quality fiber-based photon-pair sources. Here, we experimentally demonstrate how to get past this limitation by dispersion tailoring a xenon-filled hollow-core photonic crystal fiber. The source operates at room temperature, and is designed to generate Raman-free photon-pairs at useful wavelength ranges, with idler at the telecom, and signal at a visible range. We achieve a coincidence-to-accidentals ratio (2) as high as 2740 combined with an ultra low heralded g H (0) = 0.002, indicating a very high signal to noise ratio and a negligible multi-photon emission probability. Moreover, by gas-pressure tuning, we demonstrate the control of photon frequencies over a range as large as 13 THz, covering S-C and L telecom band for the idler photon. This work demonstrates that hollow-core photonic crystal fiber is an excellent platform to design high quality photon-pair sources, and could play a driving role in the emerging quantum technology.

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Martin Cordier, Philippe Delaye, Frédéric Gérôme, Fetah Benabid, Isabelle Zaquine. 2020-01-06. Raman-free fibered photon-pair source. https://arxiv.org/abs/2001.01510

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