Physics – Quantum Physics
Scientific paper
2005-11-07
Chinese Physics 15/7, 1421-1424 (2006).
Physics
Quantum Physics
4 pages, no figure. A complete rewrritten vession, accepted for publication in Chinese Physics
Scientific paper
10.1088/1009-1963/15/7/006
We investigate schemes for quantum secret sharing and quantum dense coding via tripartite entangled states. We present a scheme for sharing classical information via entanglement swapping using two tripartite entangled GHZ states. In order to throw light upon the security affairs of the quantum dense coding protocol, we also suggest a secure quantum dense coding scheme via W state in analogy with the theory of sharing information among involved users.
Cao Zhuo-Liang
Xue Zheng-Yuan
Yi You-Min
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