贝尔态（Bell States）是属于量子信息学领域的一个术语，用于描述两个量子比特（Qubit）系统的四种最大纠缠态。它得名于爱尔兰物理学家，著名的贝尔不等式的提出者约翰·斯图尔特·贝尔。
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提出非完整力学的广义达朗贝尔-拉格朗日原理，包括其牛顿表述和拉格朗日表述。此原理能导出态空间封闭的运动方程组。
Generalized DAlembert-Lagranges principle for non-holonomic mechanics, including its Newtons formulation and Lagrangian formulation, are given. This principle can lead to the closed motion equations.
为了与量子纠缠类比，进一步研究了这种纠缠态对贝尔不等式的破坏以及波导群时延的相关性质。
The simulation is discussed in detail, including the violation of the Bell inequality and the correlation properties of optical pulses' group delays.
介绍了产生电子拍的量子模型，陈述了纳米线的研究现状，叙述了在纳米线中实现量子逻辑门及纠缠态的设想及理论依据，以及检测贝尔不等式的实验方案。
The design of quantum bits, entangle states and the related theory, as well as an experiment to test Bell′s inequality are introduced in details.
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