标题： 多量子相干与自旋团簇中的纠缠动力学 显示英文标题

标题： Multiple Quantum Coherence and Entanglement Dynamics in Spin Clusters

摘要： 为了揭示多个量子（MQ）相干性和纠缠之间的一致性，我们数值研究了这些现象在由偶极-偶极相互作用耦合的一维线性链和环状核自旋1/2系统中的动力学行为。 与基于描述整个自旋系统的密度矩阵计算MQ相干性强度的方法相反，我们基于约化密度矩阵，仅考虑与所选自旋对相关的“分化”强度。 结果表明，只有对于最近邻的自旋，纠缠和MQ相干性具有相似的动力学行为，而对于远距离的自旋，我们没有得到任何一致性。 显示英文摘要

摘要： With the purpose to reveal consistency between multiple quantum (MQ) coherences and entanglement, we investigate numerically the dynamics of these phenomena in one-dimensional linear chains and ring of nuclear spins 1/2 coupled by dipole dipole interactions. As opposed to the calculation of the MQ coherence intensity based on the density matrix describing the spin system as a whole, we consider the "differentiated" intensity related only to the chosen spin pair based on the reduced density matrix. It is shown that the entanglement and the MQ coherence have similar dynamics only for nearest neighbors while we did not obtained any consistency for remote spins.