Photonic interface between subcarrier wave and dual rail encodings

• URL: http://arxiv.org/abs/2209.11719v2
• Date: Thu, 4 May 2023 21:59:28 GMT
• Title: Photonic interface between subcarrier wave and dual rail encodings
• Abstract summary: We show an interface between subcarrier wave and dual rail encodings with a fidelity of more than 92% using a linear optical circuit. The scheme may find an application in future heterogeneous quantum networks that combine quantum key distribution with trusted and non-trusted nodes.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum key distribution with multimode subcarrier wave encoding is propitious for being robust against environmental disturbance. For application in long-distance quantum communications this encoding has to be compatible with entanglement-assisted quantum repeaters that are commonly designed to work with dual rail encodings. We propose and demonstrate an interface between subcarrier wave and dual rail encodings with a fidelity of more than 92\% using a linear optical circuit. The developed scheme may find an application in future heterogeneous quantum networks that combine quantum key distribution with trusted and non-trusted nodes.

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