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Special AMO/QO Physics Seminar


"Quantum Coherence in light-harvesting complexes: the macro & micro views"


Dr. Hui Dong
University of California, Berkeley

ABSTRACT 

Understanding the physical origin of the long-lived coherence in the natural light-harvesting system is essential to the interpretation of the near-unit quantum efficiency of photon conversion. We have developed the single-molecular ultrafast method to focus on individual molecules and decoupled the disorder and dynamical fluctuation caused by the local proteins environment. The result will be presented for photo-echo signal. The dynamical fluctuation of local environment is shown as the variation of signal intensities. An emergent ensemble behavior will be presented with the scaling of relative fluctuation as 1/√N, where N is the number of molecules in the detecting zone.


Tuesday, March 24, 2015
IQSE 578, 10:00 AM
Mitchell Physics Building


Institute for Quantum Science and Engineering
Texas A&M University

(Coffee and pastries to be served 15 minutes prior start time)

Host: Dr. Marlan Scully