Frontiers of quantum physics

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Multiparticle generalization of entanglement swapping

Physical Review A American Physical Society (APS) 57:2 (1998) 822-829

Authors:

S Bose, V Vedral, PL Knight
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Entanglement in optical information processing

Institute of Electrical and Electronics Engineers (IEEE) (1998) 144-145

Authors:

V Vedral, MB Plenio, PL Knight
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Entanglement in optical information processing

Institute of Electrical and Electronics Engineers (IEEE) (1998) 101-101

Authors:

V Vedral, MB Plenio, PL Knight
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Multi-Particle Entanglement Purification Protocols

Institute of Electrical and Electronics Engineers (IEEE) (1998) 102-102

Authors:

M Murao, MB Plenio, S Popescu, V Vedral, PL Knight
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Multi-particle entanglement purification protocols

(1998) 1-5

Authors:

M Murao, MB Plenio, V Vedral, P Knight, S Popescu

Abstract:

Purification schemes for multi-particle entangled states cannot be treated as straightforward extensions of those for two particles because of the lack of symmetry they possess. We propose purification protocols for a wide range of mixed entangled states of many particles. These are useful for understanding entanglement, and will be of practical significance in multi-user cryptographic schemes or distributed quantum computation and communication. We show that operating locally on multi-particle entangled states directly is more efficient that relying on two-particle purification.