Objectif "We propose to develop and apply novel methods of nonlinear spectroscopy to investigate the significance and consequences of coherent effects for a variety of photophysical and photochemical molecular processes. We will use coherent two-dimensional (2D) spectroscopy as an ideal tool to study electronic coherences.Quantum mechanics as described by the Schrödinger equation is fully coherent: The phase of a wavefunction evolves deterministically in the time-dependent case. However, observations are restricted to reduced “systems” coupled to an “environment.” The resulting transition from coherent to incoherent behavior on an ultrafast timescale has many yet unexplored consequences, e.g. for transport in photosynthesis, photovoltaics or other molecular “nanomaterials.”In contrast to conventional 2D spectroscopy, we will not measure the coherently emitted field within a four-wave mixing process but rather implement a range of incoherent observables (ion mass spectra, fluorescence, and photoelectrons). Yet we can still extract all the desired information using “phase cycling” with collinear pulse sequences from a femtosecond pulse shaper. This opens up a new range of interdisciplinary experiments and will allow for the first time a direct nonlinear-spectroscopic comparison of molecular systems in all states of matter. Specifically, we will realize 2D spectroscopy in molecular beams, liquids, low-temperature solids, and on surfaces including heterogeneous and nanostructured samples. Tuning the external couplings will help elucidating the role of the environment in electronic (de)coherence phenomena.Furthermore, we will combine 2D spectroscopy with subdiffraction spatial resolution using photoemission electron microscopy (PEEM). This enables us to map transport in molecular aggregates and other heterogeneous nanosystems in time and space on a nanometer length scale. Thus we access the intersection between the domains of electronics and nanophotonics." Champ scientifique natural sciencesphysical sciencesquantum physicsnatural sciencesphysical sciencesopticsmicroscopyelectron microscopynatural sciencesbiological sciencesbotanyengineering and technologyenvironmental engineeringenergy and fuelsrenewable energysolar energyphotovoltaicnatural sciencesphysical sciencesopticsspectroscopy Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-CG-2013-PE4 - ERC Consolidator Grant - Physical and Analytical Chemical Sciences Appel à propositions ERC-2013-CoG Voir d’autres projets de cet appel Régime de financement ERC-CG - ERC Consolidator Grants Institution d’accueil JULIUS-MAXIMILIANS-UNIVERSITAT WURZBURG Contribution de l’UE € 2 669 124,00 Adresse SANDERRING 2 97070 Wuerzburg Allemagne Voir sur la carte Région Bayern Unterfranken Würzburg, Kreisfreie Stadt Type d’activité Higher or Secondary Education Establishments Contact administratif Christian Gloggengießer Chercheur principal Tobias Manuel Brixner (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire JULIUS-MAXIMILIANS-UNIVERSITAT WURZBURG Allemagne Contribution de l’UE € 2 669 124,00 Adresse SANDERRING 2 97070 Wuerzburg Voir sur la carte Région Bayern Unterfranken Würzburg, Kreisfreie Stadt Type d’activité Higher or Secondary Education Establishments Contact administratif Christian Gloggengießer Chercheur principal Tobias Manuel Brixner (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée