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.

9 pages, 4 figures

References in corpus (5)

• Hacking commercial quantum cryptography systems by tailored bright illumination
• Long term performance of the SwissQuantum quantum key distribution network in a field environment
• Resilience of gated avalanche photodiodes against bright illumination attacks in quantum cryptography
• Secure gated detection scheme for quantum cryptography
• Countermeasure against tailored bright illumination attack for DPS-QKD

Cited by in corpus (5)

• Optimised quantum hacking of superconducting nanowire single-photon detectors
• Robust countermeasure against detector control attack in practical quantum key distribution system
• Optical control of single-photon negative-feedback avalanche diode detector
• Source-independent quantum random number generator against tailored detector blinding attacks
• Nonclassical Attack on a Quantum KeyDistribution System