本文基于与各自的两层环境相互作用的两量子比特系统,详细考察了强、弱耦合体系下第二层环境的腔个数N和两层环境间的耦合系数κ对量子导引动力学的影响,研究发现:随着N和κ的增加,量子导引不仅可以出现振荡现象,而且存活时间和量值都能得到一定程度地提高。为了抑制环境退相干,我们还讨论了量子弱测量和测量反转操作对量子导引动力学的调制作用,结果表明弱测量方法可以有效地保护量子导引。

The effects of the second-layer environments’ cavity number N and the coupling strength κ between two-layer environments on the dynamics of quantum steering have been explored in detail for the weak and strong coupling regimes in this paper based on a quantum system consisting of two qubits, each interacting independently with its own two-layer environments.It has been shown that,with the increase in N and κ, quantum steering presents the oscillation phenomenon, and the survival time and values of which can be improved to some extent.In order to suppress the environmental decoherence, we discuss further the manipulation of quantum weak measurement and measurement reversal on quantum steering.The result shows that quantum steering can be protected effectively by the weak measurement method.