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World's First Monolithic SiGe QKD Transmitter Chip
Published 11 Apr 2025 in quant-ph | (2504.08285v1)
Abstract: We present a single-chip photonic QKD transmitter fabricated on a silicon platform. We achieve secure-key generation over 45.9km of field-deployed fiber and prove its operation along 32 WDM channels, by sourcing light without III-V materials.
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