Sending-or-not twin-field quantum key distribution in practice

Understand

We present results of practical sending-or-not quantum key distribution.

• In real-life implementations, we need consider the following three requirements, a few different intensities rather than infinite number of different intensities, a phase slice of appropriate size rather than infinitely small size and the statistical fluctuations.
• We first show the decoy-state method with only a few different intensities and a phase slice of appropriate size.
• We then give a statistical fluctuation analysis for the decoy-state method.