期刊
QUANTUM INFORMATION PROCESSING
卷 8, 期 4, 页码 319-330出版社
SPRINGER
DOI: 10.1007/s11128-009-0107-z
关键词
Controlled teleportation; Uncooperation; Entanglement channel; Quantum network
资金
- National Natural Science Foundation of China [10674018]
- National Fundamental Research Program of China [2004CB719903, 2006CB921204]
We study the teleportation of an unknown quantum state from a sender (Alice) to a receiver (Bob) via the control of many supervisors (Charlie 1, Charlie 2, . . .) in a network. It has been shown that such a task can be achieved by distributing a GHZ-type entangled state among the participants in advance. In the protocols with GHZ-type entanglement channel, the achievement of teleportation between Alice and Bob is conditioned on the cooperation of all the supervisors. In other words, if anyone of the supervisors does not cooperate, the teleportation will fails. In this paper, we introduce another kind of controlled teleportaton protocol with other types of entangled states acting as the quantum channel, in which the teleportation between Alice and Bob can be realized with high degree of endurance against uncooperation of part of supervisors.
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