Laser-controlled switching of molecular arrays in an dissipative environment
- The optical switching of molecular ensembles in a dissipative environment is a subject of various fields of chemical physics and physical chemistry. Here we try to switch arrays of molecules from a stable collective ground state to a state in which all molecules have been transferred to another stable higher-energy configuration. In our model switching proceeds through electronically excited intermediates which are coherently coupled to each other through dipolar interactions, and which decay incoherently within a finite lifetime by coupling to a dissipative environment. The model is quite general, but parameters are chosen to roughly resemble the all-trans -> all-cis isomerization of an array of azobenzene molecules on a surface. Using analytical and optimal control pulses and the concept of "laser distillation," we demonstrate that for various aggregates (dimers up to hexamers), controlled and complete switching should be possible.
Verfasserangaben: | Gereon Floss, Tillmann KlamrothORCiDGND, Peter SaalfrankORCiDGND |
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DOI: | https://doi.org/10.1103/PhysRevB.83.104301 |
ISSN: | 1098-0121 |
Titel des übergeordneten Werks (Englisch): | Physical review : B, Condensed matter and materials physics |
Verlag: | American Physical Society |
Verlagsort: | College Park |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2011 |
Erscheinungsjahr: | 2011 |
Datum der Freischaltung: | 26.03.2017 |
Band: | 83 |
Ausgabe: | 10 |
Seitenanzahl: | 9 |
Fördernde Institution: | Deutsche Forschungsgemeinschaft [SFB 658, C2] |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
Peer Review: | Referiert |