Security of the differential-quadrature-phase-shift quantum key distribution
Security of the differential-quadrature-phase-shift quantum key distribution
One of the simplest methods for implementing quantum key distribution over fiber-optic communication is the Bennett-Brassard 1984 protocol with phase encoding (PE-BB84 protocol), in which the sender uses phase modulation over double pulses from a laser and the receiver uses a passive delayed interferometer. Using essentially the same setup and …