Article ID Journal Published Year Pages File Type
1541088 Optics Communications 2008 5 Pages PDF
Abstract

A secure quantum key distribution protocol is proposed to distribute the three-dimensional secret message in a two-way quantum channel based on the entanglement of two-qutrit quantum system. The present protocol has an advantage over transmitting directly the secret message with large capacity since the distributed message has been imposed on nonorthogonal two-qutrit-entangled states by the sender using the superdense coding via local unitary operations. The security is ensured by the entanglement of the two-qutrit quantum system and the secure transmission of the traveling-particle sequence in the lossless and noiseless channel.

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Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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