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SUMMARY:Vibronic coherence in light harvesting systems  - Professor Alexan
 dra Olaya-Castro
DTSTART:20200117T143000Z
DTEND:20200117T153000Z
UID:TALK136960@talks.cam.ac.uk
CONTACT:James Craston
DESCRIPTION:There is mounting evidence that vibronic coupling and the asso
 ciated quantum mechanical exchange of energy between excitonic and some vi
 brational motions could be at the heart of the counterintuitive long-lived
  coherence beating probed in Two-dimensional ultrafast spectroscopy of pho
 tosynthetic complexes.  Under this hypothesis\, specific quasi-coherent in
 tramolecular vibrations influence excited-state dynamics through the forma
 tion of joint quantum states of excitonic and vibrational degrees of freed
 om. The exact influence such vibronic coupling on excited state dynamics i
 s however not fully understood. In this talk I will discuss implications o
 f coherent vibronic coupling for understanding non-trivial quantum effects
  during energy transfer\, energy conversion and synchronisation processes 
 in prototype light-harvesting systems as well as a quantum-optical approac
 hes to probe the quantum coherent nature of the vibronic interactions in s
 uch systems
LOCATION:Pippard Lecture Theatre\, Cavendish Laboratory\, J.J. Thomson Ave
 nue
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