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- Title
DETERMINISTIC SECURE QUANTUM COMMUNICATION WITH FOUR-QUBIT W STATES.
- Authors
YUAN, HAO; SONG, JUN; LIU, XIANG-YUAN; CHENG, SHAN; HOU, KUI; HAN, LIAN-FANG
- Abstract
We propose a new protocol for deterministic secure quantum communication with a four-qubit W state. In this protocol, by using four local two-particle unitary operations and Bell basis measurements, the two legitimate users can directly transmit secret messages after exchanging some additional classical information. It will be shown that our protocol has a high capacity as each W state can carry two bits of secret information, and has a high intrinsic efficiency because almost all the instances are useful. Furthermore, this protocol is feasible with present day techniques.
- Subjects
QUANTUM communication; QUANTUM theory; PARTICLES; OPTICAL communications; COMPUTER network protocols; DATA transmission systems
- Publication
International Journal of Quantum Information, 2011, Vol 9, Issue 1, p607
- ISSN
0219-7499
- Publication type
Article
- DOI
10.1142/S0219749911006879