Quantum optimal control of photoelectron spectra and angular distributions
| Autor: | Robin Santra, R. Esteban Goetz, Christiane P. Koch, Antonia Karamatskou |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Quantum Physics Quantum optimal control Physics::Instrumentation and Detectors Atomic Physics (physics.atom-ph) Laser pulse shaping FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology Optimal control 01 natural sciences Spectral line Physics - Atomic Physics Extreme ultraviolet Ionization 0103 physical sciences Physics::Atomic and Molecular Clusters ddc:530 Physics::Atomic Physics Atomic physics Quantum Physics (quant-ph) 010306 general physics 0210 nano-technology |
| Zdroj: | Physical review / A 93(1), 013413 (2016). doi:10.1103/PhysRevA.93.013413 |
| ISSN: | 2469-9934 2469-9926 |
| DOI: | 10.1103/physreva.93.013413 |
| Popis: | Photoelectron spectra and photoelectron angular distributions obtained in photoionization reveal important information on e.g. charge transfer or hole coherence in the parent ion. Here we show that optimal control of the underlying quantum dynamics can be used to enhance desired features in the photoelectron spectra and angular distributions. To this end, we combine Krotov's method for optimal control theory with the time-dependent configuration interaction singles formalism and a splitting approach to calculate photoelectron spectra and angular distributions. The optimization target can account for specific desired properties in the photoelectron angular distribution alone, in the photoelectron spectrum, or in both. We demonstrate the method for hydrogen and then apply it to argon under strong XUV radiation, maximizing the difference of emission into the upper and lower hemispheres, in order to realize directed electron emission in the XUV regime. |
| Databáze: | OpenAIRE |
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