Time-Bin BB84 QKD System Using Indium Phosphide and Silicon Nitride Photonic Integrated Circuits

• URL: http://arxiv.org/abs/2606.21308v1
• Date: Fri, 19 Jun 2026 10:44:09 GMT
• Title: Time-Bin BB84 QKD System Using Indium Phosphide and Silicon Nitride Photonic Integrated Circuits
• Abstract summary: We demonstrate a dual-chip InP-SiN photonic QKD system with on-chip pulse generation and reconfigurable decoding.<n>The system sustains a QBER below 4% and delivers secret keys at kbps rates over 150-250 km of fiber.
• Score: 35.56128075597508
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We demonstrate a dual-chip InP-SiN photonic QKD system with on-chip pulse generation and reconfigurable decoding, implementing time-bin BB84 with finite-key security against coherent attacks. The system sustains a QBER below 4% and delivers secret keys at kbps rates over 150-250 km of fiber.

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