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Criterion for Genuine Multipartite Entanglement Quantum Channels |
| JIANG Nian-Quan |
| College of Physics and Electric Information, Wenzhou University, Wenzhou 325035 |
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| Cite this article: |
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JIANG Nian-Quan 2010 Chin. Phys. Lett. 27 010302 |
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Abstract We introduce a character matrix for the N-qubit subsystem of a 2N-qubit state and show the criterion for genuine entanglement channel existing between two N-qubit subsystems in the state. The criterion allows us to check conveniently whether genuine quantum channels exist or not in the 2N-qubit state without calculating its N-qubit reduced density matrices.
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| Keywords:
03.67.Hk
03.67.Mn
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Received: 11 May 2009
Published: 30 December 2009
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| PACS: |
03.67.Hk
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(Quantum communication)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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