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arXiv 1306.4717cond-mat.mes-hallphysics.chem-phquant-ph
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施主-桥-受主系统中的相干量子动力学:超越跳跃和超交换机制

Coherent quantum dynamics in donor-bridge-acceptor systems: Beyond the hopping and super-exchange mechanisms

Seogjoo Jang, Timothy C. Berkelbach, David R. Reichman

摘要:

通过将最近发展的极化子变换量子主方程(PQME)与著名的Redfield和Forster量子输运理论进行比较,研究了模型供体-桥-受体系统的布居转移动力学.我们表明,PQME方法减少到这两个理论在各自的有效性限制和自然插值它们之间作为一个函数的系统浴耦合强度。通过探索我们的模型问题的参数空间,我们确定了新的制度的运输动力学在桥接系统中遇到的生物和有机的能量转移问题。此外,我们证明了三能级系统,如本文研究的代表理想的极小模型的量子相干传输的识别体现在超交换现象,不能被捕获的福斯特跳跃的方法。

英文摘要:

The population transfer dynamics of model donor-bridge-acceptor systems is studied by comparing a recently developed polaron-transformed quantum master equation (PQME) with the well-known Redfield and Forster theories of quantum transport. We show that the PQME approach reduces to these two theories in their respective limits of validity and naturally interpolates between them as a function of the system-bath coupling strength. By exploring the parameter space of our model problem, we identify novel regimes of transport dynamics in bridged systems like those encountered in biological and organic energy transfer problems. Furthermore, we demonstrate that three-level systems like the ones studied herein represent ideal minimal models for the identification of quantum coherent transport as embodied in super-exchange phenomena that cannot be captured by Forster-like hopping approaches.

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。

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