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

秦猛, 田东平

Qin Meng(秦猛) and Tian Dong-Ping(田东平)

中国物理B . 2009, (4): 1338 -1341 . DOI: 10.1088/1674-1056/18/4/008