Nonadiabatic theory for subcycle ionic dynamics in multielectron tunneling ionization

Abstract

Multielectron tunneling ionization creates ionic coherence crucial for lasing and driving electron motion in molecules. While tunneling is well understood as a single active electron process, less emphasis has been placed on theoretical descriptions of bound electrons during tunneling. This work systematically investigates multielectron tunneling ionization based on the strong field approximation, establishing a theoretical foundation and demonstrating the equivalence of wave function and density matrix approaches for subcycle ionic dynamics. An accurate subcycle nonadiabatic ionization rate is also derived and incorporated into the theory to improve its quantitative accuracy. Applying the theory to N${}_2$ and CO${}_2$, this work showcases how an intense laser field can induce ionic coherence in molecules as observed in previous experiments. These findings encourage future investigations into multielectron tunneling ionization and its applications in lasing and in controlling chemical reactions.

References in corpus (24)

• Octopus, a computational framework for exploring light-driven phenomena and quantum dynamics in extended and finite systems
• High-brightness switchable multi-wavelength remote laser in air
• Symphony on Strong Field Approximation
• Population Redistribution among Multiple Electronic States of Molecular Nitrogen Ions in Strong Laser Fields
• Multiorbital tunneling ionization of the CO molecule
• Strong Field Ionization Rate for Arbitrary Laser Frequencies
• Recollision induced superradiance of ionized nitrogen molecules
• New determination of structure parameters in strong field tunneling ionization theory of molecules
• Theory of attosecond transient absorption spectroscopy of strong-field-generated ions
• One-Electron Ionization of Multielectron Systems in Strong Nonresonant Laser Fields
• Self-seeded lasing in ionized air pumped by 800 nm femtosecond laser pulses
• Sub-barrier Coulomb effects on the interference pattern in tunneling ionization photoelectron spectra
• Strong field ionization to multiple electronic states in water
• Prediction of the derivative discontinuity in density functional theory from an electrostatic description of the exchange and correlation potential
• Can strong-field ionization prepare attosecond dynamics?
• Electronic State Population Dynamics upon Ultrafast Strong Field Ionization and Fragmentation of Molecular Nitrogen
• Coherent electronic-vibrational dynamics in deuterium bromide probed via attosecond transient absorption spectroscopy
• Measuring the quantum state of photoelectrons
• Attosecond XUV probing of vibronic quantum superpositions in Br${}_2^{+}$
• Coherence from multiorbital tunneling ionization of molecules
• Probing Vibronic Coherence in Charge Migration of Molecules Using Strong Field Sequential Double Ionization
• Electronic-vibrational dynamics and coherence in x-ray transient absorption of N2+ induced by strong-field ionization
• Enhanced Excited State Population and Coherence via Adiabatic Tunneling Ionization and Excitation
• Optical Interference Effect in Strong-field Electronic Coherence Spectroscopy