8 papers
Edge states and quantum optical high-harmonic generation from topological insulators
Christian Saugbjerg Lange, Lars Bojer Madsen
The strong-field process of high-harmonic generation (HHG) has, in recent years, been treated from a quantum optical perspective in the emerging research area of strong-field quant…
Limitations of an approximative phase-space description in strong-field quantum optics
Rasmus Vesterager Gothelf, Lars Bojer Madsen, Christian Saugbjerg Lange
In recent years, strong-field processes such as high-order harmonic generation (HHG) and above-threshold ionization driven by nonclassical states of light have become an increasing…
High-Order Harmonic Generation with Beyond-Semiclassical Emitter Dynamics: A Strong-Field Quantum Optical Heisenberg Picture Approach
Christian Saugbjerg Lange, Ella Elisabeth Lassen, Rasmus Vesterager Gothelf +1
Quantum-optical descriptions of strong-field processes have attracted significant attention in recent years. Typically, the theoretical modeling has been conducted in the Schrödin…
Charge creation via quantum tunneling in one-dimensional Mott insulators: A numerical study of the extended Hubbard model
Thomas Hansen, Lars Bojer Madsen, Yuta Murakami
Charge creation via quantum tunneling, i.e. dielectric breakdown, is one of the most fundamental and significant phenomena arising from strong light(field)-matter coupling. In this…
Excitonic Enhancement of Squeezed Light in Quantum-Optical High-Harmonic Generation From a Mott Insulator
Christian Saugbjerg Lange, Thomas Hansen, Lars Bojer Madsen
The strong-field induced generation of nonclassical states of light is not only a subject of fundamental research but also has potential usage in quantum information science and te…
High-Harmonic Generation in a Crystal Driven by Quantum Light
Rasmus Vesterager Gothelf, Christian Saugbjerg Lange, Lars Bojer Madsen
We study intraband high-harmonic generation (HHG) in a crystal driven by quantum light. Previous theoretical studies have developed a framework based on coherent state expansions i…