Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 58: Poster: Quantum Optics and Photonics III

Q 58.34: Poster

Donnerstag, 14. März 2019, 16:15–18:15, S Atrium Informatik

Harmonic generation in laser-driven tight-binding models employing the Kwant Python package. — •Francisco Javier Ortega Dueñas and Dieter Bauer — Institute for Physics, University of Rostock, 18051 Rostock

Strong-field laser-driven condensed matter systems can be simulated on various levels of rigour. The simplest and most flexible approach is the coupling of tight-binding models to external laser fields.

We discuss how to use the Kwant Python package [1] for the efficient set-up of the tight-binding Hamitonian matrix for a spatially finite system, possibly having leads, and how to employ Kwant's output for the time evolution of the system in a laser field. We discuss how to couple the laser field to the system and calculate high-harmonic spectra. The role of topological effects in the strong-field dynamics and harmonic spectra is discussed for exemplary model systems.