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http://dx.doi.org/10.13089/JKIISC.2006.16.1.3

Secure Direct Communication protocol Using Entanglement Swapping  

Hong Chang-ho (Graduate School of Information Security(GSIS), Korea University)
Lee Hwa-yean (Graduate School of Information Security(GSIS), Korea University)
Kim Ji-in (Department of Physics, Korea University)
Lim Jong-in (Graduate School of Information Security(GSIS), Korea University)
Yang Hyung-jin (Graduate School of Information Security(GSIS), Korea University, Department of Display Semiconductor, Korea University)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.16, no.1, 2006 , pp. 3-12 More about this Journal
Abstract
We propose a direct communication protocol using entanglement swapping. The safety of this protocol is guaranteed by the basic properties of entanglement swapping. This protocol is efficient to transmit two classical bits of information per one session. This efficiency is better than that of ping-pong protocol suggested by Bostrom and Felbinger. Even if an eavesdropper intervenes in midway, the eavesdropper will be detected with the probability of $75\%$ in the verification process of one bit. Therefore the perfect security is guaranteed if we use enough amount of bits for the verification process.
Keywords
Entanglement Swapping; Quantum Direct Communication;
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