Comment on “Quantum key distribution without alternative measurements” [Phys. Rev. A61, 052312 (2000)]
Yong-Sheng Zhang, Chuan‐Feng Li, Guang‐Can Guo · Physical Review A · 2001
In a recent paper [A. Cabello, Phys. Rev. A 61, 052312 (2000)], a quantum key distribution protocol based on entanglement swapping was proposed. However, in this Comment, it is shown that this protocol is insecure if Eve uses a special strategy to attack.