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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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Multicolor Quantum Control for Suppressing Ground State Coherences in Two-Dimensional Electronic Spectroscopy
J Lim1, C M Bösen1, A D Somoza1
1Institut für Theoretische Physik and IQST, Albert-Einstein-Allee 11, Universität Ulm, 89081 Ulm, Germany.
Physical Review Letters
|December 24, 2019
Summary
This study introduces a novel coherent control scheme to isolate excited-state coherences in light-harvesting complexes. This method enhances the analysis of energy transfer dynamics in complex biological systems.
Area of Science:
- Quantum Biology
- Spectroscopy
- Photochemistry
Background:
- Light-harvesting complexes exhibit oscillatory spectral features suggesting coherent energy transfer.
- Isolating excited-state coherences in congested spectra is a significant experimental challenge.
Purpose of the Study:
- To develop a coherent control scheme for suppressing ground-state coherences.
- To enable rephasing spectra dominated by excited-state coherences for clearer analysis.
- To advance the understanding of energy transfer in complex biological systems.
Main Methods:
- Implementation of a novel coherent control scheme.
- Suppression of ground-state coherences.
- Analysis using a model dimeric system and numerically exact methods.
Main Results:
- Demonstrated suppression of ground-state coherences.
- Achieved rephasing spectra dominated by excited-state coherences.
- Provided a benchmark for the developed coherent control scheme.
Conclusions:
- The developed scheme facilitates rigorous inference of coherent energy transfer.
- Combining temporal and spectral control methods can lead to advanced experimental techniques.
- Significant advancement in understanding complex open many-body structure and dynamics is anticipated.
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