Chinese Physics B

Bipartite entanglement of a two-qubit system with anisotropic couplings under nonuniform magnetic fields

Qin Meng, Tian Dong-Ping

Published Mar 17, 2009• 2 citations

Abstract

This paper investigates bipartite entanglement of a two-qubit system with anisotropic couplings under an inhomogeneous magnetic field. This work is mainly to investigate the characteristics of a Heisenberg XYZ chain and obtains some meaningful results. By the concept of negativity, it finds that the inhomogeneity of magnetic field may induce entanglement and the critical magnetic field is independent of J z . The inhomogeneous magnetic field can increase the value of critical magnetic field B c . It also finds that the magnetic field not only suppresses the entanglement but also can induce it to revival for some time.

DOI: 10.1088/1674-1056/18/4/008

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