Frontiers of quantum physics

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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.

Multiparticle entanglement purification protocols

Physical Review A - Atomic, Molecular, and Optical Physics 57:6 (1998) R4075-R4078

Authors:

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

Abstract:

Purification schemes for multiparticle entangled states cannot be treated as straightforward extensions of those two-particle ones 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 could be of practical significance in multiuser cryptographic schemes or distributed quantum computation and communication. We show that operating locally on multiparticle entangled states directly is more efficient than relying on two-particle purification. © 1998 The American Physical Society.
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