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arXiv · 1308.2295

Characteristics of superconducting single photon detector in DPS-QKD system under bright illumination blinding attack

Mikio Fujiwara·Toshimori Honjo·Kaoru Shimizu·Kiyoshi Tamaki·Masahide Sasaki
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Abstract

We derive the time-dependent photo-detection probability equation of a superconducting single photon detector (SSPD) to study the responsive property for a pulse train at high repetition rate. Using this equation, we analyze the characteristics of SSPDs when illuminated by bright pulses in blinding attack on a quantum key distribution (QKD). We obtain good agreement between expected values based on our equation and actual experimental values. Such a time-dependent probability analysis contributes to security analysis.

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Mikio Fujiwara, Toshimori Honjo, Kaoru Shimizu, Kiyoshi Tamaki, Masahide Sasaki. 2013-08-10. Characteristics of superconducting single photon detector in DPS-QKD system under bright illumination blinding attack. https://doi.org/10.1364/oe.21.006304

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