Shaul Mukamel: "New Directions in Multidimensional Optical Spectroscopy of Biological Excitons with Classical Optical Fields and Entangled Photons"

Shaul Mukamel
Chemistry Department, University of California Irvine, Irvine, California, USA

New Directions in Multidimensional Optical Spectroscopy of Biological Excitons with Classical Optical Fields and Entangled Photons

Coherent two dimensional (2D) optical spectroscopic techniques use femtosecond laser pulses to excite the vibrational and electronic degrees of freedom of molecules and watch for correlated events taking place during two (or more) controlled time intervals. Simulations that demonstrate how energy- transfer and charge-separation pathways in photosynthetic antennae and reaction centers may be revealed by these signals are presented. Extensions to spectroscopy of single molecules with time and frequency gated fluorescence of photoelectron detection are proposed. Multidimensional signals obtained in response to entangled photons by varying the parameters of the photon functions are predicted. Entangled photons offer an unusual combination of bandwidths and temporal resolution as well as the control over quantum pathways of matter, not possible by classical beams.