School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
J Chem Phys. 2012 Mar 28;136(12):124513. doi: 10.1063/1.3697817.
Dynamics of resonant energy transfer of a single excitation in a molecular dimer system are studied in the simultaneous presence of diagonal and off-diagonal exciton-phonon coupling. It is found that, at given temperatures, the off-diagonal coupling can enhance both the coherence of the resonant energy transfer and the net quantity of energy transferred from an initially excited monomer to the other. Also studied is the dynamics of entanglement between the dimer system and the phonon bath as measured by the von Neumann entanglement entropy, and the inter-monomer entanglement dynamics for the excitonic system.
本文研究了在对角和非对角激子-声子耦合同时存在的情况下，分子二聚体系统中单激发共振能量转移的动力学。结果表明，在给定温度下，非对角耦合可以增强共振能量转移的相干性和从初始激发的单体转移到另一个单体的净能量。还研究了通过冯·诺依曼纠缠熵测量的二聚体系统和声子浴之间的纠缠动力学，以及激子系统的单体间纠缠动力学。
