Controlled Teleportation of an Unknown N -qubit Entangled GHZ State
| Autor: | Zhu Shi-Qun, Sha Jin-Qiao, Fang Jian-Xing, Jiang Wei-Xing |
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| Rok vydání: | 2007 |
| Předmět: |
Computer Science::Emerging Technologies
Greenberger–Horne–Zeilinger state Physics and Astronomy (miscellaneous) Computer science Qubit Data_CODINGANDINFORMATIONTHEORY Quantum Physics State (functional analysis) Communication source Topology Teleportation Unitary state Computer Science::Cryptography and Security |
| Zdroj: | Communications in Theoretical Physics. 47:1045-1048 |
| ISSN: | 0253-6102 |
| DOI: | 10.1088/0253-6102/47/6/016 |
| Popis: | A scheme for controlled teleportation of an unknown N-qubit entangled GHZ state from the sender Alice to the distant receiver Bob is proposed. And m-qubit GHZ state is sufficient for the task of control by m spatially-separated supervisors. Conditioned on the local operations executed by all participants, Bob can faithfully restore the original state by performing relevant unitary transformations with the aid of some classical message about measurement results. Anyone's absence will absolutely lead to the failure of teleportation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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