Details
| Original language | English |
|---|---|
| Article number | 124027 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Volume | 47 |
| Issue number | 12 |
| Publication status | Published - 10 Jun 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.
Keywords
- ionization, non-adiabatic dynamics, spin-control
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 47, No. 12, 124027, 10.06.2014.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
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.
KW - ionization
KW - non-adiabatic dynamics
KW - spin-control
UR - http://www.scopus.com/inward/record.url?scp=84902326562&partnerID=8YFLogxK
U2 - 10.1088/0953-4075/47/12/124027
DO - 10.1088/0953-4075/47/12/124027
M3 - Article
AN - SCOPUS:84902326562
VL - 47
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
SN - 0953-4075
IS - 12
M1 - 124027
ER -