Nature - USA (2020-06-25)

Extended Data Table 3 | Typical quantum attacks and our countermeasures

Attack BriefDescription Countermeasure

Detectorefficiencymismatch27, 37, 38 Eveexploitsefficiencymismatchto controldetectors Free-runningdetectors

Detectorblinding26, 39 Evemanipulatesthedetectorsbysendingbrightlight Monitoringelectronics

Detectordamage^40 Evesendsultra-stronglightto damagethedetectors Monitoringelectronics

Detectordead-time^28 Evecontrolsthedetectorbyexploitingdeadtime Free-runningdetectors

Beam-splitter^29 Beam-splitterratiois wavelength-dependent Frequencyfilter

Spatial-mode^30 Detectorshaveefficiencymismatchinspatialdomain Spatialfilter

Data are from refs.^26 –^30 ,^37 –^40.