量子比特在两个XY自旋环境中的纠缠动力学研究

Entanglement Dynamics of Qubits under the Influence of Two XY Spin Environments

研究了量子比特和两个XY自旋环境相互作用时的纠缠动力学问题.结果表明:自旋环境的数目以及对称性影响量子比特纠缠的动力学行为.通过适当调节两环境的参数,可以得到所需要的解纠缠速率.

We study the entanglement time evolution of two qubits interacting independently with their respective environments which are described by the anisotropic XY models. We find that both the number and the symmetrical properties of the environments affect the entanglement dynamics of the two qubits. Properly controlling the parameters of the two environments, one can get the entanglement time evolution speed wanted.