Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-03-17
New J. Phys. 11, 085001 (2009)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
19 pages, 11 figures, minor modifications, published version
Scientific paper
10.1088/1367-2630/11/8/085001
We investigate the quantum coherent dynamics of an externally driven effective two-level system subjected to a slow Ohmic environment characteristic of biomolecular protein-solvent reservoirs in photosynthetic light harvesting complexes. By means of the numerically exact quasi adiabatic propagator path integral (QUAPI) method we are able to include non-Markovian features of the environment and show the dependence of the quantum coherence on the characteristic bath cut-off frequency omega_c as well as on the driving frequency omega_l and the field amplitude A. Our calculations extend from the weak coupling regime to the incoherent strong coupling regime. In the latter case, we find evidence for a resonant behaviour, beyond the expected behaviour, when the reorganization energy E_r coincides with the driving frequency. Moreover, we investigate how the coherent destruction of tunneling within the two-level system is influenced by the non-Markovian environment.
Eckel Jens
Reina John Henry
Thorwart Michael
No associations
LandOfFree
Coherent control of an effective two-level system in a non-Markovian biomolecular environment does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Coherent control of an effective two-level system in a non-Markovian biomolecular environment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent control of an effective two-level system in a non-Markovian biomolecular environment will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-491284