2022/11/11 by Ivan Gonoskov, Gonoskov, Ivan, René Sondenheimer +9 · 7 citations
Physics and Astronomy · Engineering · #Laser-Matter Interactions and Applications #Quantum optics and atomic interactions #Photonic and Optical Devices
paper · pdf · doi:10.48550/arxiv.2211.06177
We investigate the generation of higher-order harmonics from a quantum optics perspective via the interaction of a semiconductor with a coherent pump field focusing on the regime where strong-field intraband excitations dominate. The related Schrödinger equation for the system is solved approximately and the classical and quantum characteristics of the fundamental light mode as well as the higher frequency modes are analyzed. We find intricate but sufficiently mild modifications of the fundamental mode and coherent displacements depending on the position quadrature component of the driving laser field for the harmonic modes within our approximations due to the intricate induced nonlinear interactions. Similar to high-harmonic generation in atoms, all radiation field modes are entangled, allowing for potential novel protocols for quantum information processing with high photon numbers over a large range of frequencies.