Optimal control of quantum systems on metallic surfaces

T. Szakács, T. Lucza, A. Lörincz

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Optimal control of quantum processes on a metallic surface is studied. The subject of this control are transitions between states of the quantum system. The objective of optimization is to squeeze the ground-state wavefunction with help of the higher electronic level. The quantum system is modelled within the Born-Oppenheimer approximation with effective potentials of displaced harmonic oscillators. The means of control is a time-dependent pulsed electric field. Pulse durations considered were about as long as a vibrational period but the envelope of the pulse could vary on a shorter time scale. Metallic reflection was treated within the so-called hydrodynamic approximation. Results show that within the hydrodynamic approximation and far from the plasma frequency the optimal field on the surface has a very similar shape to, but with different amplitude than, the optimal field of the vacuum.

Original languageEnglish
Pages (from-to)251-260
Number of pages10
JournalSurface Science
Volume296
Issue number2
DOIs
Publication statusPublished - Oct 20 1993

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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