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Probing electronic decoherence with high-resolution attosecond photoelectron interferometry

Busto, David LU orcid ; Laurell, Hugo LU ; Finkelstein-Shapiro, Daniel LU ; Alexandridi, Christiana ; Isinger, Marcus LU ; Nandi, Saikat LU ; Squibb, Richard J. ; Turconi, Margherita ; Zhong, Shiyang LU and Arnold, Cord L. LU , et al. (2022) In European Physical Journal D 76(7).
Abstract

Abstract: Quantum coherence plays a fundamental role in the study and control of ultrafast dynamics in matter. In the case of photoionization, entanglement of the photoelectron with the ion is a well-known source of decoherence when only one of the particles is measured. Here, we investigate decoherence due to entanglement of the radial and angular degrees of freedom of the photoelectron. We study two-photon ionization via the 2s2p autoionizing state in He using high spectral resolution photoelectron interferometry. Combining experiment and theory, we show that the strong dipole coupling of the 2s2p and 2p2 states results in the entanglement of the angular and radial degrees of freedom. This translates, in angle-integrated... (More)

Abstract: Quantum coherence plays a fundamental role in the study and control of ultrafast dynamics in matter. In the case of photoionization, entanglement of the photoelectron with the ion is a well-known source of decoherence when only one of the particles is measured. Here, we investigate decoherence due to entanglement of the radial and angular degrees of freedom of the photoelectron. We study two-photon ionization via the 2s2p autoionizing state in He using high spectral resolution photoelectron interferometry. Combining experiment and theory, we show that the strong dipole coupling of the 2s2p and 2p2 states results in the entanglement of the angular and radial degrees of freedom. This translates, in angle-integrated measurements, into a dynamic loss of coherence during autoionization. Graphic Abstract: [Figure not available: see fulltext.].

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Physical Journal D
volume
76
issue
7
article number
112
publisher
EDP Sciences
external identifiers
  • scopus:85133340454
ISSN
1434-6060
DOI
10.1140/epjd/s10053-022-00438-y
project
Electronic coherence and correlation in attosecond photoionization dynamics
Controlling the photoelectric effect in real-time
language
English
LU publication?
yes
id
a1626f8b-22aa-48f3-ba4a-c010992ff889
date added to LUP
2022-10-04 11:38:17
date last changed
2024-04-04 08:43:51
@article{a1626f8b-22aa-48f3-ba4a-c010992ff889,
  abstract     = {{<p>Abstract: Quantum coherence plays a fundamental role in the study and control of ultrafast dynamics in matter. In the case of photoionization, entanglement of the photoelectron with the ion is a well-known source of decoherence when only one of the particles is measured. Here, we investigate decoherence due to entanglement of the radial and angular degrees of freedom of the photoelectron. We study two-photon ionization via the 2s2p autoionizing state in He using high spectral resolution photoelectron interferometry. Combining experiment and theory, we show that the strong dipole coupling of the 2s2p and 2p<sup>2</sup> states results in the entanglement of the angular and radial degrees of freedom. This translates, in angle-integrated measurements, into a dynamic loss of coherence during autoionization. Graphic Abstract: [Figure not available: see fulltext.].</p>}},
  author       = {{Busto, David and Laurell, Hugo and Finkelstein-Shapiro, Daniel and Alexandridi, Christiana and Isinger, Marcus and Nandi, Saikat and Squibb, Richard J. and Turconi, Margherita and Zhong, Shiyang and Arnold, Cord L. and Feifel, Raimund and Gisselbrecht, Mathieu and Salières, Pascal and Pullerits, Tönu and Martín, Fernando and Argenti, Luca and L’Huillier, Anne}},
  issn         = {{1434-6060}},
  language     = {{eng}},
  number       = {{7}},
  publisher    = {{EDP Sciences}},
  series       = {{European Physical Journal D}},
  title        = {{Probing electronic decoherence with high-resolution attosecond photoelectron interferometry}},
  url          = {{http://dx.doi.org/10.1140/epjd/s10053-022-00438-y}},
  doi          = {{10.1140/epjd/s10053-022-00438-y}},
  volume       = {{76}},
  year         = {{2022}},
}