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| Content Provider | PubMed Central |
|---|---|
| Author | Savolainen, Janne Riccardo, Fanciulli Dijkhuizen, Niels Moore, Ana L. Hauer, Jürgen Tiago, Buckup Marcus, Motzkus Herek, Jennifer L. |
| Abstract | Adaptive femtosecond pulse shaping in an evolutionary learning loop is applied to a bioinspired dyad molecule that closely mimics the early-time photophysics of the light-harvesting complex 2 (LH2) photosynthetic antenna complex. Control over the branching ratio between the two competing pathways for energy flow, internal conversion (IC) and energy transfer (ET), is realized. We show that by pulse shaping it is possible to increase independently the relative yield of both channels, ET and IC. The optimization results are analyzed by using Fourier analysis, which gives direct insight to the mechanism featuring quantum interference of a low-frequency mode. The results from the closed-loop experiments are repeatable and robust and demonstrate the power of coherent control experiments as a spectroscopic tool (i.e., quantum-control spectroscopy) capable of revealing functionally relevant molecular properties that are hidden from conventional techniques. |
| Related Links | http://dx.doi.org/10.1073/pnas.0711927105 |
| Ending Page | 7646 |
| Page Count | 6 |
| Starting Page | 7641 |
| File Format | |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 22 |
| Volume Number | 105 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2008-06-03 |
| Access Restriction | Open |
| Rights Holder | National Academy of Sciences |
| Subject Keyword | General Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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