Quantum oscillatory exciton migration in photosynthetic reaction centers

被引:86
作者
Abramavicius, Darius [1 ]
Mukamel, Shaul [1 ]
机构
[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
基金
美国国家科学基金会;
关键词
biochemistry; biomembranes; chemical energy conversion; chemical reactions; energy harvesting; excitons; molecular biophysics; photosynthesis; quantum computing; quantum entanglement; solar energy conversion; MULTIDIMENSIONAL OPTICAL SPECTROSCOPY; II REACTION CENTERS; PHOTOSYSTEM-II; FEMTOSECOND SPECTROSCOPY; RESOLUTION; TRANSPORT; SYSTEMS; FLUORESCENCE; FLUCTUATIONS; COHERENCE;
D O I
10.1063/1.3458824
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The harvesting of solar energy and its conversion to chemical energy is essential for all forms of life. The primary photon absorption, transport, and charge separation events, which trigger a chain of chemical reactions, take place in membrane-bound photosynthetic complexes. Whether quantum effects, stemming from entanglement of chromophores, persist in the energy transport at room temperature, despite the rapid decoherence effects caused by environment fluctuations, is under current active debate. If confirmed, these may explain the high efficiency of light harvesting and open up numerous applications to quantum computing and information processing. We present simulations of the photosynthetic reaction center of photosystem II that clearly establish oscillatory energy transport at room temperature originating from interference of quantum pathways. These signatures of quantum transport may be observed by two dimensional coherent optical spectroscopy. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3458824]
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页数:9
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