Strümpfer J, Sener M, Schulten K
Center for Biophysics and Computational Biology, University of Illinois at Urbana-Champaign.
J Phys Chem Lett. 2012 Feb 16;3(4):536-542. doi: 10.1021/jz201459c. Epub 2012 Jan 26.
This perspective examines how hundreds of pigment molecules in purple bacteria cooperate through quantum coherence to achieve remarkable light harvesting efficiency. Quantum coherent sharing of excitation, which modifies excited state energy levels and combines transition dipole moments, enables rapid transfer of excitation over large distances. Purple bacteria exploit the resulting excitation transfer to engage many antenna proteins in light harvesting, thereby increasing the rate of photon absorption and energy conversion. We highlight here how quantum coherence comes about and plays a key role in the photosynthetic apparatus of purple bacteria.
这一观点探讨了紫色细菌中的数百个色素分子如何通过量子相干性协同作用，以实现卓越的光捕获效率。激发的量子相干共享改变了激发态能级并结合了跃迁偶极矩，使得激发能在远距离上快速转移。紫色细菌利用由此产生的激发转移来让许多天线蛋白参与光捕获，从而提高光子吸收和能量转换的速率。我们在此强调量子相干性是如何产生的，以及它在紫色细菌的光合装置中所起的关键作用。
