Resonant energy transfer assisted by off-diagonal coupling.
Resonant energy transfer assisted by off-diagonal coupling.
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DOI：
10.1063/1.3697817
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发表时间：
2011-03
期刊：
影响因子：
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通讯作者：
N. Wu;Kewei Sun;Z. Chang;Yang Zhao
中科院分区：
文献类型：
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作者：
N. Wu;Kewei Sun;Z. Chang;Yang Zhao
研究了同时存在对角和非对角激子-声子耦合时分子二聚体系统中单次激发的共振能量转移动力学。研究发现，在给定温度下，非对角耦合可以增强谐振能量转移的相干性和从最初激发的单体转移到另一个单体的净能量量。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。
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.