Two-photon interference at a telecom wavelength for quantum networking

• URL: http://arxiv.org/abs/2412.13900v1
• Date: Wed, 18 Dec 2024 14:41:12 GMT
• Title: Two-photon interference at a telecom wavelength for quantum networking
• Authors: Mathis Cohen, Laurent Labonté, Romain Dalidet, Sébastien Tanzilli, Anthony Martin,
• Abstract summary: We leverage fiber-coupled devices, which encompass fibered photon pair-sources and off-the-shelf optics, to demonstrate Hong-Ou-Mandel interference. We record two-photon coincidences, showing a state-of-art visibility of 91.9(5)%.
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• Abstract: The interference between two independent photons stands as a crucial aspect of numerous quantum information protocols and technologies. In this work, we leverage fiber-coupled devices, which encompass fibered photon pair-sources and off-the-shelf optics, to demonstrate Hong-Ou-Mandel interference. We employ two distinct single photon sources, namely an heralded single-photon source and a weak coherent laser source, both operating asynchronously in continuous-wave regime. We record two-photon coincidences, showing a state-of-art visibility of 91.9(5)\%. This work, compliant with telecom technology provides realistic backbones for establishing long-range communication based on quantum teleportation in hybrid quantum networks.

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