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arXiv 1412.4136physics.chem-phcond-mat.softphysics.bio-phquant-ph
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用相干振动相互作用增强光捕获能力:量子热机图象

Enhancing light-harvesting power with coherent vibrational interactions: a quantum heat engine picture

Nathan Killoran, Susana F. Huelga, Martin B. Plenio

摘要:

最近的证据表明,量子效应可能在生物捕光系统中具有重要的功能。随着离域电子激发,现在怀疑量子相干相互作用与某些近共振振动可能有助于光捕获性能。然而,这种相干振动相互作用所提供的实际量子优势还没有被证实。我们研究了量子设计原理,即电子和振动自由度之间的单能量量子的相干交换可以增强光捕获系统的功率,超过仅通过热机制可能实现的功率。我们提出了一个原型量子热机,干净地说明了这一量子设计原理,并量化其量子优势使用热力学性能的措施。我们还证明了该原则的相关性连接到自然光捕获结构的参数制度。

英文摘要:

Recent evidence suggests that quantum effects may have functional importance in biological light-harvesting systems. Along with delocalized electronic excitations, it is now suspected that quantum coherent interactions with certain near-resonant vibrations may contribute to light-harvesting performance. However, the actual quantum advantage offered by such coherent vibrational interactions has not yet been established. We investigate a quantum design principle, whereby coherent exchange of single energy quanta between electronic and vibrational degrees of freedom can enhance a light-harvesting system's power above what is possible by thermal mechanisms alone. We present a prototype quantum heat engine which cleanly illustrates this quantum design principle, and quantify its quantum advantage using thermodynamic measures of performance. We also demonstrate the principle's relevance in parameter regimes connected to natural light-harvesting structures.

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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