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Phys. Rev. A 66, 044303 (2002) [4 pages]

Quantum entanglement of unitary operators on bipartite systems

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Xiaoguang Wang1,2 and Paolo Zanardi1
1Institute for Scientific Interchange (ISI) Foundation, Viale Settimio Severo 65, I-10133 Torino, Italy
2Department of Physics and Centre for Advanced Computing–Algorithms and Cryptography, Macquarie University, Sydney, New South Wales 2109, Australia

Received 1 July 2002; published 22 October 2002

We study the entanglement of unitary operators on d1×d2 quantum systems. This quantity is closely related to the entangling power of the associated quantum evolutions. The entanglement of a class of unitary operators is quantified by the concept of concurrence.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.66.044303
DOI:
10.1103/PhysRevA.66.044303
PACS:
03.67.Lx, 03.65.Fd
 
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