基于梯度傅里叶级数的四量子比特计算机验证  

Computer Verification of Four Qubits Based on Gradient Fourier Series

作　　者：刘嘉辉[1] 董强 LIU Jiahui;DONG Qiang(School of Computer Science and Technology,Harbin University of Science and Technology,Harbin 150080,China)

机构地区：[1]哈尔滨理工大学计算机科学与技术学院,黑龙江哈尔滨150080

出　　处：《牡丹江师范学院学报（自然科学版）》2023年第2期22-27,共6页Journal of Mudanjiang Normal University：Natural Sciences Edition

基　　金：黑龙江省自然科学基金项目(LH2021F031)。

摘　　要：提出一种基于梯度傅里叶级数的四量子比特纠缠计算机验证方法 .通过数字量化的量子编码,拟合梯度划分策略,在傅里叶级数求解编码中θ和φ的最大似然估计,解决了四量子比特纠缠在计算机条件下的状态鉴别过程;依据梯度策略实现量子解除纠缠、弱纠缠、弱强纠缠、强纠缠不同状态的划分条件.分析结果证明,基于梯度傅里叶级数的四量子比特纠缠计算机验证方法,能够有效地识别量子信息是否处于纠缠状态.A computer verification method for four-qubit entanglement based on a gradient Fourier series is proposed.Through quantum coding of digital quantization,fitting gradient partition strategy,and maximum likelihood estimations of θ and φ in coding solution with Fourier series are applied to solve the state identification process of four qubits entanglement under computer conditions.According to the gradient strategy,the division conditions of disentanglement status,weak entanglement status,weak-strong entanglement sta­tus and strong entanglement status are realized.The analysis results show that the computer verification method of four-qubit entanglement based on gradient Fourier series can effectively identify whether quantum information is entangled.

关 键 词：量子比特 量子纠缠 量子编码 傅里叶级数 

分 类 号：TP309[自动化与计算机技术—计算机系统结构] O413[自动化与计算机技术—计算机科学与技术]