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Compact Continuous-Variable Quantum Key Distribution System Employing Monolithically Integrated Silicon Photonic Transceiver

Denis Fatkhiev, João dos Reis Frazão, Alireza H. Derkani, Kadir Gümüş, Menno van den Hout, Aaron Albores-Mejia, Chigo Okonkwo·March 30, 2026·DOI: 10.1109/ECOC66593.2025.11263038
Quantum Physicseess.SY

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Abstract

We demonstrate the first CV-QKD system featuring a custom-designed monolithic silicon photonic dual-polarisation transceiver. Leveraging PS-64-QAM, we achieved 1.9 Mbit/s secret key rate across 25 km of standard single-mode fibre, highlighting the potential of electronic-photonic integration for practical QKD.

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