PT Journal
AU Elezov, M
   Ozhegov, R
   Goltsman, G
   Makarov, V
TI Countermeasure against bright-light attack on superconducting nanowire single-photon detector in quantum key distribution
SO Opt. Express
JI Opt. Express
PY 2019
BP 30979
EP 30988
VL 27
IS 21
DI 10.1364/OE.27.030979
LA English
DE SSPD; SNSPD
AB We present an active anti-latching system for superconducting nanowire single-photon detectors. We experimentally test it against a bright-light attack, previously used to compromise security of quantum key distribution. Although our system detects continuous blinding, the detector is shown to be partially blindable and controllable by specially tailored sequences of bright pulses. Improvements to the countermeasure are suggested.
ER