三量子比特系统在非尔科夫环境下的保真度  

Fidelity of Three-qubit Systems in a Non-Markovian Environment

作　　者：阿曼妮萨·阿卜杜瓦伊提 Amannisa Abdiwayit(School of Physics and Electronic Engineering,Xinjiang Normal University,Urumqi Xinjiang 830054)

机构地区：[1]新疆师范大学物理与电子工程学院,新疆乌鲁木齐830054

出　　处：《中国科技纵横》2025年第3期145-148,共4页China Science & Technology Overview

摘　　要：非马尔科夫环境具有记忆效应,会对量子系统的演化产生影响,从而导致量子态保真度发生变化。一个共同耦合于玻色库中的三量子比特系统通过第一个比特传输一个确定的态到第三个比特。本文为研究三量子比特系统在非尔科夫环境下的保真度,利用非马尔科夫量子态扩散方法表示系统的密度矩阵,进一步利用量子态传输保真度公式评估传输质量。通过数值模拟和分析,研究非马尔科夫环境下量子比特系统传输过程中的保真度变化,并讨论影响传输质量的相关因素,以期为量子信息科学和量子计算领域工作提供参考和借鉴。Non-Markovian environments have memory effects that can affect the evolution of quantum systems,leading to changes in the fidelity of quantum states.A three qubit system coupled together in a Bose library transmits a determined state from the first bit to the third bit.In order to study the fidelity of the three qubit system in a non-Markovian environment,this paper uses the non-Markov quantum state diffusion method to represent the density matrix of the system,and further evaluates the transmission quality using the quantum state transmission fidelity formula.Through numerical simulation and analysis,the fidelity changes in the transmission process of quantum bit systems in non-Markov environments are studied,and the relevant factors affecting transmission quality are discussed,in order to provide reference and inspiration for the development of quantum information science and quantum computing.

关 键 词：量子态传输 保真度 量子态扩散方法 非马尔科夫性 

分 类 号：O431.2[机械工程—光学工程]