XY自旋环境中量子比特纠缠动力学研究

Entanglement Dynamics of Qubits in XY Spin Environment

利用精确解方法,研究了XY自旋环境中量子比特间纠缠随时间的演化.结果表明,系统纠缠度的演化可以通过改变自旋环境各向异性相互作用强度的方法得以操控.进而得出,可以利用各向异性相互作用对纠缠度演化行为的影响来判定自旋环境所属的普适类.

The entanglement dynamics of two qubits interacting with an anisotropic XY spin environment are investigated. The results indicate that the entanglement of the two qubits can be manipulated by adjusting the value of anisotropic interaction. The universality property of the environment can be judged by the different dynamical behavior of entanglement influenced by the anisotropic interaction.