Experimental upstream transmission of continuous variable quantum key distribution access network

Abstract

Continuous-variable quantum key distribution which can be implemented using only low-cost and off-the-shelf components reveals great potential in the practical large-scale realization. Access network as a modern network necessity, connects multiple end-users to the network backbone. In this work, we demonstrate the first upstream transmission quantum access networks using continuous-variable quantum key distribution. A two-end-user quantum access network is then experimentally realized. Through phase compensation, data synchronization and other technical upgrades, we achieve 390kbps secret key rate of the total network. In addition, we extend the case of two-end-user quantum access network to the case of multiple users, and analyze the network capacity in the case of multiple users by measuring the additive excess noise from different time slots.

arXiv comment4 pages,3figures

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Cited by in corpus (5)

• Continuous-variable quantum passive optical network
• A cost-efficient quantum access network with qubit-based synchronization
• Integrated quantum communication network and vibration sensing in optical fibers
• Advances in Continuous Variable Measurement-Device-Independent Quantum Key Distribution
• Analyzing the performance of CV-MDI QKD under continuous-mode scenarios