初始关联导致的量子干涉及其对开放系统动力学的影响

项目名称： 初始关联导致的量子干涉及其对开放系统动力学的影响

项目编号： No.11204156

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 物理学I

项目作者： 满忠晓

作者单位： 曲阜师范大学

项目金额： 25万元

中文摘要： 开放系统的不可逆时间演化是量子力学的基本问题，而量子信息的发展所带来的新问题和新方法要求对开放系统动力学做出进一步研究。传统研究中，系统一般被假定与环境初始时没有关联，而实际上系统-环境关联在初始时刻就不可避免地存在。本项目首先研究系统-环境的初始关联在开放系统动力学中的作用，特别考虑初始关联态的相对位相导致的量子干涉对系统与环境能量交换和信息流动的影响。然后，作为进一步的拓展与应用，研究多体系统与环境的初始关联对系统纠缠演化的影响。分别考察多体系统与同一环境以及与独立局域环境的作用，探索如何通过选择系统-环境初始关联态中的相对位相达到对纠缠演化的最优操控。最后，研究初始关联等因素在光捕获复合物能量输运效率中的作用及其他相关问题。本项目通过层层递进的研究，深入揭示初始关联对开放系统动力学的影响机制，为量子信息技术的实际应用提供必要的理论基础。

中文关键词： 量子开放系统；量子退相干；量子纠缠；非马尔可夫性；量子信息

英文摘要： The irreversible time evolution of open system is a fundamental issue in quantum mechanics. The development of quantum information bring about some new questions and methods which require a further investigation for the dynamics of open system. In the conventional study the system is assumed uncorrelated from its environment initially, while in practical situations the investigated system is unavoidably correlated with the environment also at the initial time. In this project, we first study the role of initial system-environment correlations in the dynamics of open quantum system. In particular, we consider the influence of quantum interference induced by the relative phase in the correlated initial state on the energy exchange between system and its environment as well as the information flow. Then, as a further generalization and application, we study the effects of initial correlations between multipartite system and the environment in the evolution of system's entanglement. We investigate the interactions of the system with a common environment and with independent local environments, respectively, and explore how to choose the relative phases in the initial correlated system-environment state to optimally control the entanglement evolution. In the end, we study the roles of factors such as initial correlat

英文关键词： quantum open system；quantum decoherence；quantum entanglement；non-Markovianity；quantum information