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Phys. Rev. A 66, 052318 (2002) [5 pages]

Multipartite entanglement for entanglement teleportation

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Jinhyoung Lee*
School of Mathematics and Physics, The Queen’s University, Belfast, BT7 1NN, United Kingdom
Institute of Quantum Information Processing and Systems, University of Seoul, Seoul, Korea

Hyegeun Min and Sung Dahm Oh†
Department of Physics, Sookmyung Women’s University, Seoul, Korea

Received 30 January 2002; published 22 November 2002

A scheme for entanglement teleportation is proposed to incorporate multipartite entanglement of four qubits as a quantum channel. Based on the invariance of entanglement teleportation under an arbitrary two-qubit unitary transformation, we derive relations for the separabilities of joint measurements at a sending station and of unitary operations at a receiving station. From the relations of the separabilities it is found that an inseparable quantum channel always leads to total teleportation of entanglement with an inseparable joint measurement and/or a nonlocal unitary operation.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.66.052318
DOI:
10.1103/PhysRevA.66.052318
PACS:
03.67.Hk

*Electronic address: jlee@am.qub.ac.uk

†Electronic address: sdoh@sookmyung.ac.kr

 
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