Continuous-variable quantum state tomography of photoelectrons
Hugo Laurell, Daniel Finkelstein‐Shapiro, Christoph Dittel, Chen Guo, R. Demjaha, M. Ammitzböll, Robin Weissenbilder, Lana Neoričić, Sizuo Luo, Mathieu Gisselbrecht, Cord L. Arnold, Andreas Buchleitner, Tõnu Pullerits, A. L’Huillier, David Busto
Abstract
We propose a continuous variable quantum state tomography protocol of electrons which result from the ionization of atoms or molecules by the absorption of extreme ultraviolet light pulses. Our protocol is benchmarked against a direct calculation of the quantum state of photoelectrons ejected from helium and argon in the vicinity of a Fano resonance. In the latter case, we furthermore distill ion-photoelectron entanglement due to spin-orbit splitting. This opens routes toward the investigation of quantum coherence and entanglement properties on the ultrafast timescale.