High-rate continuous-variable measurement-device-independent quantum key distribution (2210.07576v2)

Published 14 Oct 2022 in quant-ph

Abstract: We report the first experiment of continuous-variable measurement-device-independent quantum key distribution that enables secret key generation at a symbol rate of 5 MBaud without frequency and optical phase locking. This is achieved by using a new relay structure based on a polarization-based 90-degree optical hybrid and a well-designed DSP pipeline.

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