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QUANTUM OPTICS / AMO PHYSICS SEMINAR”


"QUANTUM MECHANICS OF PHOTOSYNTHESIS"


Konstantin Dorfman
Institute for Quantum Science and Engineering
Texas A&M University


ABSTRACT 

Recent progress in coherent multidimensional optical spectroscopy revealed effects of quantum coherence coupled to population leading to population oscillations as evidence of quantum transport. Their description requires reevaluation of the currently used methods and approximations. We identify couplings between coherences and populations have been shown earlier to enhance the quantum yield in a photocell and power of the laser. We investigated a broad range of typical parameter regimes, which may be applied to a variety of photosynthetic complexes. We demonstrate that quantum coherence may be induced in photosynthetic complexes under natural conditions of incoherent light from the sun. This demonstrates that a photosynthetic reaction center may be viewed as a biological quantum heat engine that transforms high-energy thermal photon radiation into low entropy electron flux. The efficiency of the engine depends on quantum effects.


Tuesday, January 24, 2012
IQSE 578, 12:30 p.m.
Mitchell Physics Building


Institute for Quantum Science and Engineering
Texas A&M University

(Brown Bag Lunch)