TY  - JOUR
A1  - Floss, Gereon
A1  - Klamroth, Tillmann
A1  - Saalfrank, Peter
T1  - Laser-controlled switching of molecular arrays in an dissipative environment
T2  - Physical review : B, Condensed matter and materials physics
N2  - 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.
Y1  - 2011
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/36954
SN  - 1098-0121
VL  - 83
IS  - 10
PB  - American Physical Society
CY  - College Park
ER  -