Laser control for the optimal evolution of pure quantum states

D. Sugny, A. Keller, O. Atabek, D. Daems, C. M. Dion, S. Guérin, and H. R. Jauslin
Phys. Rev. A 71, 063402 – Published 7 June 2005

Abstract

Starting from an initial pure quantum state, we present a strategy for reaching a target state corresponding to the extremum (maximum or minimum) of a given observable. We show that a sequence of pulses of moderate intensity, applied at times when the average of the observable reaches its local or global extremum, constitutes a strategy transferable to different control issues. Among them, postpulse molecular alignment and orientation are presented as examples. The robustness of such strategies with respect to experimentally relevant parameters is also examined.

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  • Received 27 October 2004

DOI:https://doi.org/10.1103/PhysRevA.71.063402

©2005 American Physical Society

Authors & Affiliations

D. Sugny1,*, A. Keller2, O. Atabek2, D. Daems3, C. M. Dion4, S. Guérin1, and H. R. Jauslin1

  • 1Laboratoire de Physique de l’Université de Bourgogne, UMR CNRS 5027, Boîte Postale 47870, 21078 Dijon, France
  • 2Laboratoire de Photophysique Moléculaire du CNRS, Université Paris-Sud, Bâtiment 210, Campus d’Orsay, 91405 Orsay Cedex, France
  • 3Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles, 1050 Brussels, Belgium
  • 4Department of Physics, Umeå University, SE-90187 Umeå, Sweden

  • *Electronic address: dominique.sugny@u-bourgogne.fr

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Vol. 71, Iss. 6 — June 2005

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