Energy Transfer in the Light-Harvesting Complexes of Purple Bacteria

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2018,（8）
• 页码范围: 225-229
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0253-6102/70/2/225

摘要

In this paper,we use a nonlinear decohering quantum model to study the initial step of photosynthesis which is an ultrafast transfer process of absorption the sunlight by light-harvesting complexes and electronic excitation transfer to the reaction center (RC).In this decohering model,the Hamiltonian of the system commutes with the systemenvironment interaction.We take B850 ring of light-harvesting complex Ⅱ (LH-Ⅱ) in purple bacteria as an example to calculate the efficiency of the energy transfer as a function of time.We find that the environmental noise can make the LH-Ⅱ have stable energy transfer efficiency over a long time.This is to say that the environmental noise which is the decohering source has advantage of the energy transfer in the process of photosynthesis.