Browsing Faculty of Arts and Sciences by Keyword "excitons"
Now showing items 1-11 of 11
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Absence of Quantum Oscillations and Dependence on Site Energies in Electronic Excitation Transfer in the Fenna–Matthews–Olson Trimer
(American Chemical Society, 2011)Energy transfer in the photosynthetic Fenna–Matthews–Olson (FMO) complex of green sulfur bacteria is studied numerically taking all three subunits (monomers) of the FMO trimer and the recently found eighth bacteriochlorophyll ... -
Engineering Directed Excitonic Energy Transfer
(American Institute of Physics, 2010)We provide an intuitive platform for engineering exciton transfer dynamics. We show that careful consideration of the spectral density, which describes the system-bath interaction, leads to opportunities to engineer exciton ... -
Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
(American Institute of Physics, 2008)Energy transfer within photosynthetic systems can display quantum effects such as delocalized excitonic transport. Recently, direct evidence of long-lived coherence has been experimentally demonstrated for the dynamics of ... -
Exciton Coherence Lifetimes from Electronic Structure
(American Institute of Physics, 2012-04-06)We model the coherent energy transfer of an electronic excitation within covalently linked aromatic homodimers from first-principles. Our results shed light on whether commonly used models of the bath calculated via detailed ... -
Exciton Transport in Thin-Film Cyanine Dye J-Aggregates
(American Institute of Physics, 2012)We present a theoretical model for the study of exciton dynamics in J-aggregated monolayers of fluorescent dyes. The excitonic evolution is described by a Monte-Carlo wave function approach which allows for a unified ... -
Excitons in incompressible quantum liquids
(Walter de Gruyter GmbH, 1995)A theory of excitons in semiconductors in the Fractional Quantum Hall (FQH) Effect regime is presented. Non-conventional properties of magnetoexcitons in this regime originate from the fact that elementary excitations of ... -
Four-Partocle Anyon Exciton: Boson Approximation
(World Scientific Pub Co Pte Lt, 1995)A theory of anyon excitons consisting of a valence hole and three quasielectrons with electric charges –e/3 is presented. A full symmetry classification of the k = 0 states is given, where k is the exciton momentum. The ... -
Luminescence and spectroscopy
(Elsevier BV, 2002)The connection between luminescence and different chapters of spectroscopy is discussed. Modern theoretical concepts and experimental techniques wiped away the boundaries that traditionally existed between them. Nevertheless, ... -
Multipartite Quantum Entanglement Evolution in Photosynthetic Complexes
(American Institute of Physics, 2012)We investigate the evolution of entanglement in the Fenna-Matthew-Olson (FMO) complex based on simulations using the scaled hierarchy equation of motion (HEOM) approach. We examine the role of multipartite entanglement in ... -
Progress in exciton spectroscopy: personal perspective
(Elsevier BV, 2000)In this Lecture, I display my personal perspective on the progress in physics of excitons during the last 50years. Preference is given to the areas of this extensive field which I participated. They include molecular ... -
A Witness for Coherent Electronic vs Vibronic-Only Oscillations in Ultrafast Spectroscopy
(American Institute of Physics, 2012)We report a conceptually straightforward witness that distinguishes coherent electronic oscillations from their vibronic-only counterparts in nonlinear optical spectra of molecular aggregates. Coherent oscillations as a ...