Comment on “protection of quantum dialogue affected by quantum field”

Zhiming Huang, Haozhen Situ

Gan Gao

A.G. Klein

Changho Hong, Hyung-Jin Yang

In 2004, Ba An Nguyen [Phys. Lett. A 328, 6-10] has presented a Quantum Dialogue scheme for simultaneously communicating their messages. In this comment, we show that the quantum dialogue scheme is not secure against the intercept-and-resend attack and we propose a modified scheme which is secure against that attack.

Ci-Hong Liao, Chun‐Wei Yang, Tzonelih Hwang

Gan Gao

In this comment, we show that the efficiency of the proposed quantum dialogue scheme in the paper [Mod. Phys. Lett. B 29 (2015) 1550018 ] cannot reach 100%, but 66.7%.