Sending-or-not-sending twin-field quantum key distribution with redundant space
We propose to adopt redundant space such as polarization mode in the sending-or-not-sending twin-field quantum key distribution (TF-QKD) in Resistance Cable the Fock space.With the help of redundant space such as photon polarization, we can postselect events according to the outcome of the observation to the additional quantity.This compresses the