arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0905.3826quant-ph
收藏

自旋团簇中的多重量子相干性和纠缠动力学

Multiple Quantum Coherence and Entanglement Dynamics in Spin Clusters

G. B. Furman, V. M. Meerovich, V. L. Sokolovsky

摘要:

为了揭示多量子相干和纠缠之间的一致性,我们数值研究了偶极偶极相互作用耦合的一维线性核自旋链和核自旋环中多量子相干和纠缠的动力学行为.与基于描述自旋系统整体的密度矩阵计算MQ相干强度相反,我们考虑仅与基于约化的密度矩阵选择的自旋对相关的“微分”强度。结果表明,纠缠和MQ相干只有在最近的邻居,而我们没有得到任何一致性的远程自旋有类似的动力学。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑