World Scientific Publishing, Modern Physics Letters B, 05(29), p. 1550018
DOI: 10.1142/s0217984915500189
Full text: Unavailable
A two-step quantum dialogue scheme is put forward with a class of three-qubit W state and quantum dense coding. Each W state can carry three bits of secret information and the measurement result is encrypted without information leakage. Furthermore, we utilize the entangle properties of W state and decoy photon checking technique to realize three-time channel detection, which can improve the efficiency and security of the scheme.