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Ultrafast resolution of tunneling delay time

Open access
Landsman, Alexandra S., Weger, Matthias, Maurer, Jochen, Boge, Robert, Ludwig, André, Heuser, Sebastian, Cirelli, Claudio, Gallmann, Lukas, Keller, Ursula·2014·Optica

Abstract

We compare the main competing theories of tunneling time against experimental measurements using the attoclock in strong laser field ionization of helium atoms. Refined attoclock measurements reveal a real and not instantaneous tunneling delay time over a large intensity regime, using two different experimental apparatus. Only two of the theoretical predictions are compatible within our experimental error: the Larmor time, and the probability distribution of tunneling times constructed using a Feynman Path Integral (FPI) formulation. The latter better matches the observed qualitative change in tunneling time over a wide intensity range, and predicts a broad tunneling time distribution with a long tail. The implication of such a probability distribution of tunneling times, as opposed to a distinct tunneling time, challenges how valence electron dynamics are currently reconstructed in attosecond science. It means that one must account for a significant uncertainty as to when the hole dynamics begin to evolve.

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Metadata

Authors
Landsman, A. S., Weger, M., Maurer, J., Boge, R., Ludwig, A., Heuser, S., Cirelli, C., Gallmann, L., & Keller, U.
Venue
Optica
Published
2014-11-14
Volume
1
Issue
5
Pages
343
ISSN
2334-2536 (ISSN-L)
OpenAlex
W3105486811
Cited by
241
References
3
FWCI
8.82
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Ultrafast resolution of tunneling delay time. https://app.cochat.ai/papers/10.1364/optica.1.000343
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Landsman, A. S., Weger, M., Maurer, J., Boge, R., Ludwig, A., Heuser, S., Cirelli, C., Gallmann, L., & Keller, U. (2014). Ultrafast resolution of tunneling delay time. Optica. https://doi.org/10.1364/optica.1.000343

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