Matrix rearrangement approach for the entangling power with hybrid qudit systems

Authors:
Xiao-Ming Lu;Xiaoguang Wang;Yang Yang;Jian Chen
Affiliations:
Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou, China;Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou, China;Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou, China;Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou, China
Venue:
Quantum Information & Computation
Year:
2008

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Abstract

We extend the former matrix rearrangement approach of the entangling power to the general cases, without requirement of same dimensions of the subsystems. The entangling power of a unitary operator is completely determined by its realignment and partial transposition. As applications, we calculate the entangling power for the Ising interaction and the isotropic Heisenberg interaction in the hybrid qudit d1 × d2 systems.