标题： 光合作用分子在环境温度下的量子相干动力学 显示英文标题

标题： Quantum Coherent Dynamics at Ambient Temperature in Photosynthetic Molecules

摘要： 光合天线复合物负责从阳光中吸收能量并将其传输到可以储存的远端位置。 最近的实验发现，这一过程涉及色素分子（称为生色团）之间的长寿命量子相干性，这些分子构成了这些复合物。 预期在室温下100飞秒内衰减的这些相干性，却意外地被发现能在皮秒时间尺度上持续存在，尽管它们似乎没有明显与细胞的热环境隔离。 本文推导了一个量子主方程，用于描述系统在与热环境强耦合时的相干演化。 确定了长相干寿命所需的条件，并阐明了相干性在高效能量传输中的作用。 计算了隐藻藻类CS24的PE545复合物的静态光谱和激子转移速率，并显示与实验有良好的一致性。 显示英文摘要

摘要： Photosynthetic antenna complexes are responsible for absorbing energy from sunlight and transmitting it to remote locations where it can be stored. Recent experiments have found that this process involves long-lived quantum coherence between pigment molecules, called chromophores, which make up these complexes. Expected to decay within 100 fs at room temperature, these coherences were instead found to persist for picosecond time scales, despite having no apparent isolation from the thermal environment of the cell. This paper derives a quantum master equation which describes the coherent evolution of a system in strong contact with a thermal environment. Conditions necessary for long coherence lifetimes are identified, and the role of coherence in efficient energy transport is illuminated. Static spectra and exciton transfer rates for the PE545 complex of the cryptophyte algae CS24 are calculated and shown to have good agreement with experiment.