Light-matter entanglement after above-threshold ionization processes in atoms

J. Rivera-Dean*, P. Stammer, A. S. Maxwell, Th. Lamprou, P. Tzallas, M. Lewenstein, M. F. Ciappina

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Light-matter entanglement plays a fundamental role in many applications of quantum information science. Thus, finding processes where it can be observed is an important task. Here, using a one-dimensional model, we address this matter by investigating theoretically the entanglement between light and electrons generated in the above-threshold ionization (ATI) process. The study is based on the backaction of the ATI process on the quantum optical state of the system, and its dependence on the kinetic energy and direction of the emitted photoelectrons. Taking into account the dynamics of the process, we demonstrate the creation of hybrid entangled states. The amount of entanglement has been studied in terms of the entropy of entanglement. Additionally, we use the Wigner function of the driving field mode to motivate the entanglement characterization when considering electrons propagating in opposite directions.

Original languageEnglish
Article number063705
JournalPhysical Review A
Volume106
Issue number6
DOIs
StatePublished - Dec 2022

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