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Title: Entropic measure of wave-packet spreading and ionization in laser-driven atoms

Abstract

We consider wave-packet spreading and ionization of a one-dimensional model hydrogen atom interacting with a strong high-frequency laser field in the stabilization domain. We demonstrate the effect of the pulse shape on the dynamics in phase space and visualize our results with both the Wigner and the {ital Q} function phase-space quasiprobability representation. The Wehrl entropy is introduced and utilized as a convenient one-parameter measure of wave-packet spreading, phase-space localization, and ionization. {copyright} {ital 1996 The American Physical Society.}

Authors:
; ; ;  [1]
  1. Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX13PU (United Kingdom)
Publication Date:
OSTI Identifier:
285946
Resource Type:
Journal Article
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 54; Journal Issue: 1; Other Information: PBD: Jul 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; HYDROGEN; PHOTON-ATOM COLLISIONS; PHOTOIONIZATION; WAVE PACKETS; LASER RADIATION; MULTI-PHOTON PROCESSES; DYNAMICS; STABILIZATION; EIGENSTATES; ONE-DIMENSIONAL CALCULATIONS; NONLINEAR OPTICS; QUANTUM OPTICS

Citation Formats

Watson, J B, Keitel, C H, Knight, P L, Burnett, K, and Blackett Laboratory, Optics Section, Imperial College, Prince Consort Road, London SW72BZ. Entropic measure of wave-packet spreading and ionization in laser-driven atoms. United States: N. p., 1996. Web. doi:10.1103/PhysRevA.54.729.
Watson, J B, Keitel, C H, Knight, P L, Burnett, K, & Blackett Laboratory, Optics Section, Imperial College, Prince Consort Road, London SW72BZ. Entropic measure of wave-packet spreading and ionization in laser-driven atoms. United States. doi:10.1103/PhysRevA.54.729.
Watson, J B, Keitel, C H, Knight, P L, Burnett, K, and Blackett Laboratory, Optics Section, Imperial College, Prince Consort Road, London SW72BZ. Mon . "Entropic measure of wave-packet spreading and ionization in laser-driven atoms". United States. doi:10.1103/PhysRevA.54.729.
@article{osti_285946,
title = {Entropic measure of wave-packet spreading and ionization in laser-driven atoms},
author = {Watson, J B and Keitel, C H and Knight, P L and Burnett, K and Blackett Laboratory, Optics Section, Imperial College, Prince Consort Road, London SW72BZ},
abstractNote = {We consider wave-packet spreading and ionization of a one-dimensional model hydrogen atom interacting with a strong high-frequency laser field in the stabilization domain. We demonstrate the effect of the pulse shape on the dynamics in phase space and visualize our results with both the Wigner and the {ital Q} function phase-space quasiprobability representation. The Wehrl entropy is introduced and utilized as a convenient one-parameter measure of wave-packet spreading, phase-space localization, and ionization. {copyright} {ital 1996 The American Physical Society.}},
doi = {10.1103/PhysRevA.54.729},
journal = {Physical Review A},
number = 1,
volume = 54,
place = {United States},
year = {1996},
month = {7}
}