title: Characteristics of superconducting single photon detector in DPS-QKD system under bright illumination blinding attack.
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.
authors.affiliation: National Institute of Information and Communication Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan.
authors.forename: Mikio
authors.initials: M
authors.lastname: Fujiwara
authors.forename: Toshimori
authors.initials: T
authors.lastname: Honjo
authors.forename: Kaoru
authors.initials: K
authors.lastname: Shimizu
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Tamaki
authors.forename: Masahide
authors.initials: M
authors.lastname: Sasaki