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Fully integrated InGaAs/InP single-photon detector module with gigahertz sine wave gating
Ist Teil von
Review of scientific instruments, 2012-08, Vol.83 (8), p.083111-083111
Ort / Verlag
United States
Erscheinungsjahr
2012
Quelle
MEDLINE
Beschreibungen/Notizen
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 h. The detector system can substantially enhance QKD performance and our present work paves the way for practical high-speed QKD applications.