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arXiv · 1208.0127

Fully integrated InGaAs/InP single-photon detector module with gigahertz sine wave gating

Xiao-Lei Liang·Jian-Hong Liu·Quan Wang·De-Bing Du·Jian Ma·Ge Jin·Zeng-Bing Chen·Jun Zhang·Jian-Wei Pan
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Abstract

InGaAs/InP single-photon avalanche diodes (SPADs) working in the regime of GHz clock rates are crucial components for the high-speed quantum key distribution (QKD). We have developed for the first time a compact, stable and user-friendly tabletop InGaAs/InP single-photon detector system operating at a 1.25 GHz gate rate that fully integrates functions for controlling and optimizing SPAD performance. We characterize the key parameters of the detector system and test the long-term stability of the system for continuous operation of 75 hours. The detector system can substantially enhance QKD performance and our present work paves the way for practical high-speed QKD applications.

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Xiao-Lei Liang, Jian-Hong Liu, Quan Wang, De-Bing Du, Jian Ma, Ge Jin, Zeng-Bing Chen, Jun Zhang, Jian-Wei Pan. 2012-08-01. Fully integrated InGaAs/InP single-photon detector module with gigahertz sine wave gating. https://doi.org/10.1063/1.4746291

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