Salecker-Wigner-Peres quantum clock applied to strong-field tunnel ionization

The Salecker-Wigner-Peres quantum-clock approach is applied in order to determine the tunneling time of an electron in strong-field tunnel ionization via a time-dependent electric field. Our results show that the ionization of the electron takes a nonvanishing period of time. This tunneling time is...

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Bibliographic Details
Published in:arXiv.org 2016-08
Main Authors: Teeny, Nicolas, Keitel, Christoph H, Bauke, Heiko
Format: Article
Language:English
Subjects:
Electric fields
Ionization
Skewed distributions
Time dependence
Online Access:Get full text
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Summary:The Salecker-Wigner-Peres quantum-clock approach is applied in order to determine the tunneling time of an electron in strong-field tunnel ionization via a time-dependent electric field. Our results show that the ionization of the electron takes a nonvanishing period of time. This tunneling time is of the order of the Keldysh time but strictly larger than the Keldysh time. Comparing the quantum-clock tunneling time to the mean tunneling time as obtained by the virtual-detector approach, one finds that these two complementary methods give very similar results. Due to the asymmetric distribution of the tunneling time, there is a nonnegligible discrepancy between the mean tunneling time and the most probable tunneling time.
ISSN:2331-8422