量子系统中状态估计方法的综述

从广泛用于实验量子领域的典型状态估计方法,到基于系统论观点、可用于量子反馈控制的状态估计方法,详细综述了4种测量方式下的相应量子状态估计方法及其适用背景.通过其发展历程的叙述,从本质上阐述了估计的基本原理,从技术上对各种方法进行了相应的分析和比较.同时,对量子状态估计和经典状态估计进行了相应的比较,并对量子系统中的状态估计方法作了总结.

Review of state estimation methods in quantum systems

The corresponding quantum state estimation methods and their application backgrounds in four measurement situations are reviewed. The methods involve the typical methods broadly used in experimental quantum field and the state estimation methods which are based on systematic perspective and applicable to quantum feedback control. Eessentially, the estimation principle of every method is explained by stating its development process, and the corresponding analysis and comparison in technology are given. Finally, the quantum state estimation is compared with the corresponding classical state estimation, and some comments on state estimation methods in quantum systems are summarized.