The time-scale of nonlinear events driven by strong fields: Can one control the spin coupling before ionization runs over?

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Mirjam Falge
  • Patricia Vindel-Zandbergen
  • Volker Engel
  • Manfred Lein
  • Bo Y. Chang
  • Ignacio R. Sola

Organisationseinheiten

Externe Organisationen

  • Julius-Maximilians-Universität Würzburg
  • Complutense Universität Madrid (UCM)
  • Seoul National University
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Details

OriginalspracheEnglisch
Aufsatznummer124027
FachzeitschriftJournal of Physics B: Atomic, Molecular and Optical Physics
Jahrgang47
Ausgabenummer12
PublikationsstatusVeröffentlicht - 10 Juni 2014

Abstract

An initially populated spin state of an ion chain interacting with an external field can decay via spin coupling or via ionization. Using a simple two-level Hamiltonian we investigate the relation between spin-coupling and ionization rate and identify conditions for an efficient spin-control via a non-resonant Stark effect by suppressing ionization. The results are confirmed in solving the time-dependent Schrödinger equation for the interaction of a laser field with a spin-coupled model system where two electrons and a nucleus move in a collinear configuration. It is thus shown, that quantum control of intersystem crossing can indeed be effective if the intensity of the external field and the accompanying Stark-shift is adjusted properly to the spin-coupling strength.

ASJC Scopus Sachgebiete

Zitieren

The time-scale of nonlinear events driven by strong fields: Can one control the spin coupling before ionization runs over? / Falge, Mirjam; Vindel-Zandbergen, Patricia; Engel, Volker et al.
in: Journal of Physics B: Atomic, Molecular and Optical Physics, Jahrgang 47, Nr. 12, 124027, 10.06.2014.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

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abstract = "An initially populated spin state of an ion chain interacting with an external field can decay via spin coupling or via ionization. Using a simple two-level Hamiltonian we investigate the relation between spin-coupling and ionization rate and identify conditions for an efficient spin-control via a non-resonant Stark effect by suppressing ionization. The results are confirmed in solving the time-dependent Schr{\"o}dinger equation for the interaction of a laser field with a spin-coupled model system where two electrons and a nucleus move in a collinear configuration. It is thus shown, that quantum control of intersystem crossing can indeed be effective if the intensity of the external field and the accompanying Stark-shift is adjusted properly to the spin-coupling strength.",
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Download

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T1 - The time-scale of nonlinear events driven by strong fields

T2 - Can one control the spin coupling before ionization runs over?

AU - Falge, Mirjam

AU - Vindel-Zandbergen, Patricia

AU - Engel, Volker

AU - Lein, Manfred

AU - Chang, Bo Y.

AU - Sola, Ignacio R.

N1 - Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 2014/6/10

Y1 - 2014/6/10

N2 - An initially populated spin state of an ion chain interacting with an external field can decay via spin coupling or via ionization. Using a simple two-level Hamiltonian we investigate the relation between spin-coupling and ionization rate and identify conditions for an efficient spin-control via a non-resonant Stark effect by suppressing ionization. The results are confirmed in solving the time-dependent Schrödinger equation for the interaction of a laser field with a spin-coupled model system where two electrons and a nucleus move in a collinear configuration. It is thus shown, that quantum control of intersystem crossing can indeed be effective if the intensity of the external field and the accompanying Stark-shift is adjusted properly to the spin-coupling strength.

AB - An initially populated spin state of an ion chain interacting with an external field can decay via spin coupling or via ionization. Using a simple two-level Hamiltonian we investigate the relation between spin-coupling and ionization rate and identify conditions for an efficient spin-control via a non-resonant Stark effect by suppressing ionization. The results are confirmed in solving the time-dependent Schrödinger equation for the interaction of a laser field with a spin-coupled model system where two electrons and a nucleus move in a collinear configuration. It is thus shown, that quantum control of intersystem crossing can indeed be effective if the intensity of the external field and the accompanying Stark-shift is adjusted properly to the spin-coupling strength.

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JO - Journal of Physics B: Atomic, Molecular and Optical Physics

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