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Quantum Information Processing

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01-01-2015

Entanglement witnesses generated by positive maps

Author: Wei Yang

Published in: Quantum Information Processing | Issue 1/2015

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Abstract

Entanglement witnesses are non-positive Hermitian operators which can detect whether a quantum state is entangled. Positive maps based on one and two given quantum states are constructed, and entanglement witnesses are generated by composing the positive maps with affine maps. An entanglement witness example is given at the end.

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Title: Entanglement witnesses generated by positive maps
Author: Wei Yang
Publication date: 01-01-2015
Publisher: Springer US
Published in: Quantum Information Processing / Issue 1/2015
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI: https://doi.org/10.1007/s11128-014-0852-5

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