Field trial of BB84 QKD with qubit-based frame synchronization and polarization feedback achieved 26.6 kbit/s secure key rate at 18 dB loss and 115 bit/s at 40 dB loss over 12 hours in urban fiber with 1.12% average QBER.
Clock-offset recovery with sublinear complexity enables synchronization on low-level hard- ware for quantum key distribution,
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Field-Trial Quantum Key Distribution with Qubit-Based Frame Synchronization
Field trial of BB84 QKD with qubit-based frame synchronization and polarization feedback achieved 26.6 kbit/s secure key rate at 18 dB loss and 115 bit/s at 40 dB loss over 12 hours in urban fiber with 1.12% average QBER.