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Demonstration of a silicon photonic transceiver for polarization-based discrete variable quantum key distribution

Cai, Hong; Long, Christopher M.; Derose, Christopher; Boynton, Nicholas; Urayama, Junji; Pomerene, Andrew; Starbuck, Andrew L.; Trotter, Douglas C.; Davids, Paul; Lentine, Anthony L.

We demonstrate a silicon photonic transceiver circuit to implement polarization encoding/decoding for DV-QKD. The circuit is capable of encoding BB84 states with >30 dB PER and decoding with >20 dB ER.