论文标题
多个量子NMR光谱法中的多粒子纠缠
Many-particle Entanglement in Multiple Quantum NMR Spectroscopy
论文作者
论文摘要
我们使用高温和低温下纳米腔中携带自旋分子的气体的多个量子（MQ）NMR动力学来研究多个粒子纠缠。在201旋转1/2系统中，在高温和低温下获得了MQ NMR强度的分布。分布的第二刻在量子渔民信息上提供了下限，它阐明了系统中的许多粒子纠缠。研究了许多粒子纠缠对温度的依赖性。几乎所有的旋转都在低温下纠缠在一起。
We use multiple quantum (MQ) NMR dynamics of a gas of spin-carrying molecules in nanocavities at high and low temperatures for an investigation of many-particle entanglement. A distribution of MQ NMR intensities is obtained at high and low temperatures in a system of 201 spins 1/2. The second moment of the distribution, which provides a lower bound on the quantum Fisher information, sheds light on the many-particle entanglement in the system. The dependence of the many-particle entanglement on the temperature is investigated. Almost all spins are entangled at low temperatures.
