GTIIT-STU Optics Seminar

Title: Quantum Driving and Entanglement in High Harmonic Generation

Speaker: Dr. Sebastián de la Peña

Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany

Abstract

High harmonic generation (HHG) is traditionally described using semiclassical theories in which the electromagnetic field is treated classically. However, recent developments suggest that quantum-optical phenomena such as squeezing and entanglement are either intrinsically present in HHG or can be artificially generated during the process. This has opened a debate about the appropriate theoretical framework for capturing the quantum nature of HHG processes. In this work, (1) we present a benchmark example that probes the limits of semiclassical approaches in describing HHG driven by squeezed light, and (2) we provide an exact calculation demonstrating that entanglement arises naturally in HHG, even with a classical driving field.