Eavesdropping on the "ping-pong" quantum communication protocol

Preprint English OPEN
Wojcik, Antoni;
(2002)

The proposed eavesdropping scheme reveals that the quantum communication protocol recently presented by Bostrom and Felbinger [Phys. Rev. Lett. 89, 187902 (2002)] is not secure as far as quantum channel losses are taken into account.
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