arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.00808quant-ph
收藏

利用Berry曲率跟踪二能级系统的量子态演化

Tracking quantum state evolution by the Berry curvature with a two-level system

Ze-Lin Zhang, Ping Xu, Zhen-Biao Yang

摘要:

本文研究了受驱动二能级系统哈密顿量的受控参数所构成的两种拓扑结构(球面和环面),并考虑了这两种拓扑结构与系统动力学之间的联系。我们讨论了通过动力学响应方法获得的Berry曲率,显示了一定的物理和可观测的流形,包括通过整合Berry曲率探测的间隙区域,并证明了系统的状态演化可以跟踪和操纵提取的Berry曲率。

英文摘要:

We investigate two kinds of topological structures (sphere and torus) spanned by the controlled parameters of a driven two-level system's Hamiltonian, and consider the connection between the structures and the system's dynamics. We discuss the Berry curvature obtained through the dynamical response method, show the certain physical and observable manifolds including the gapped region probed by integrating the Berry curvature, and demonstrate the system's state evolution can be tracked and manipulated by extracting the Berry curvature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑