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Phys. Rev. A 75, 014304 (2007) [3 pages]

Matrix realignment and partial-transpose approach to entangling power of quantum evolutions

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Zhihao Ma1,2,3 and Xiaoguang Wang1
1Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hanzhou 310027, China
2Department of Mathematics, Shanghai Jiaotong University, Shanghai 200240, China
3Department of Mathematics, Zhejiang University, Hanzhou 310027, China

Received 13 November 2006; published 31 January 2007

Based on the matrix realignment and partial transpose, we develop an approach to the entangling power and operator entanglement of quantum unitary operators. We demonstrate the approach by studying several unitary operators on qudits, and indicate that these two matrix rearrangements are convenient to use in studying entangling capabilities of quantum operators.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.75.014304
DOI:
10.1103/PhysRevA.75.014304
PACS:
03.67.Mn, 03.65.Ud
 
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