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Opt Express. 2017 May 29;25(11):12282-12294. doi: 10.1364/OE.25.012282.

Silicon photonic transceiver circuit for high-speed polarization-based discrete variable quantum key distribution.

Abstract

We demonstrate a silicon photonic transceiver circuit for high-speed discrete variable quantum key distribution that employs a common structure for transmit and receive functions. The device is intended for use in polarization-based quantum cryptographic protocols, such as BB84. Our characterization indicates that the circuit can generate the four BB84 states (TE/TM/45°/135° linear polarizations) with >30 dB polarization extinction ratios and gigabit per second modulation speed, and is capable of decoding any polarization bases differing by 90° with high extinction ratios.

PMID:
28786586
DOI:
10.1364/OE.25.012282

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