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  State-resolved attosecond reversible and irreversible dynamics in strong optical fields

Sabbar, M., Timmers, H., Chen, Y.-J., Pymer, A. K., Loh, Z.-H., Sayres, S. G., et al. (2017). State-resolved attosecond reversible and irreversible dynamics in strong optical fields. Nature Physics, 13, 472-478. doi:10.1038/nphys4027.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-38EC-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-4862-F
Genre: Journal Article

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 Creators:
Sabbar, Mazyar1, Author
Timmers, Henry1, Author
Chen, Yi-Jen2, 3, 4, Author              
Pymer, Allison K.5, Author
Loh, Zhi-Heng6, Author
Sayres, Scott G.7, 8, Author
Pabst, Stefan9, 10, Author
Santra, Robin3, 4, Author
Leone, Stephen R.1, 11, 12, Author
Affiliations:
1Department of Chemistry, University of California, Berkeley, California 94720, USA, ou_persistent22              
2International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266714              
3Center for Free-Electron Laser Science, DESY, D-22607 Hamburg, Germany, ou_persistent22              
4Department of Physics, University of Hamburg, D-20355 Hamburg, Germany, ou_persistent22              
5Eastman Chemical Company, Kingsport, Tennessee 37660, USA, ou_persistent22              
6Division of Chemistry and Biological Chemistry, and Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, and Centre for Optical Fibre Technology, The Photonics Institute, Nanyang Technological University, Singapore 639798, Singapore, ou_persistent22              
7School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, USA, ou_persistent22              
8Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona 85287, USA, ou_persistent22              
9ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA, ou_persistent22              
10Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA, ou_persistent22              
11Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA, ou_persistent22              
12Department of Physics, University of California, Berkeley, California 94720, USA, ou_persistent22              

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Free keywords: Atomic and molecular interactions with photons, Attosecond science, High-harmonic generation, Nonlinear optics
 Abstract: Strong-field ionization (SFI) is a key process for accessing real-time quantum dynamics of electrons on the attosecond timescale. The theoretical foundation of SFI was pioneered in the 1960s, and later refined by various analytical models. While asymptotic ionization rates predicted by these models have been tested to be in reasonable agreement for a wide range of laser parameters, predictions for SFI on the sub-laser-cycle timescale are either beyond the scope of the models or show strong qualitative deviations from full quantum-mechanical simulations. Here, using the unprecedented state specificity of attosecond transient absorption spectroscopy, we follow the real-time SFI process of the two valence spin–orbit states of xenon. The results reveal that the irreversible tunnelling contribution is accompanied by a reversible electronic population that exhibits an observable spin–orbit-dependent phase delay. A detailed theoretical analysis attributes this observation to transient ground-state polarization, an unexpected facet of SFI that cannot be captured by existing analytical models that focus exclusively on the production of asymptotic electron/ion yields.

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Language(s): eng - English
 Dates: 2016-08-012017-01-032017-02-06
 Publication Status: Published online
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1038/nphys4027
 Degree: -

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Title: Nature Physics
  Other : Nat. Phys.
Source Genre: Journal
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Publ. Info: London : Nature Pub. Group
Pages: - Volume / Issue: 13 Sequence Number: - Start / End Page: 472 - 478 Identifier: ISSN: 1745-2473
CoNE: /journals/resource/1000000000025850