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

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, we address this matter by theoretically investigating the entanglement between light and electrons generated in above-threshold ionization (ATI) process. The study is based on the back-action 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.

20 pages (13 main text + 7 supplementary material), 8 figures (6 main text + 2 supplementary material). Comments are welcome

References in corpus (9)

• Experimental quantum teleportation
• Violation of Bell's inequality using classical measurements and non-linear local operations
• High harmonic spectroscopy of quantum phase transitions in a high-T${}_c$ superconductor
• Strong laser fields and their power to generate controllable high-photon-number coherent-state superpositions
• Entanglement of Orbital Angular Momentum in Non-Sequential Double Ionization
• Theory of entanglement and measurement in high harmonic generation
• Quantum entanglement in strong-field ionization
• Coherent Control and Entanglement in the Attosecond Electron Recollision Dissociation of D2+
• Entanglement and Timing-Based Mechanisms in the Coherent Control of Scattering Processes

Cited by in corpus (8)

• Strong laser physics, non-classical light states and quantum information science
• Quantum phenomena in attosecond science
• Squeezed states of light after high-harmonic generation in excited atomic systems
• Metrological robustness of high photon number optical cat states
• Ultrafast Molecular Frame Quantum Tomography
• Observation of a Multimode Displaced Squeezed State in High-Harmonic Generation
• Quantum Optics as Applied Quantum Electrodynamics is back in town
• Unravelling inter-channel quantum interference in below-threshold nonsequential double ionization with statistical measures