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Integrated Silicon Photonic Transmitter for Polarization-Encoded Quantum Key Distribution

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 نشر من قبل Chaoxuan Ma
 تاريخ النشر 2016
  مجال البحث فيزياء
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We present a silicon optical transmitter for polarization-encoded quantum key distribution (QKD). The chip was fabricated in a standard silicon photonic foundry process and integrated a pulse generator, intensity modulator, variable optical attenuator, and polarization modulator in a 1.3 mm $times$ 3 mm die area. The devices in the photonic circuit meet the requirements for QKD. The transmitter was used in a proof-of-concept demonstration of the BB84 QKD protocol over a 5 km long fiber link.



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