TY - JOUR
T1 - Probing electronic decoherence with high-resolution attosecond photoelectron interferometry
AU - Busto, David
AU - Laurell, Hugo
AU - Finkelstein-Shapiro, Daniel
AU - Alexandridi, Christiana
AU - Isinger, Marcus
AU - Nandi, Saikat
AU - Squibb, Richard J.
AU - Turconi, Margherita
AU - Zhong, Shiyang
AU - Arnold, Cord L.
AU - Feifel, Raimund
AU - Gisselbrecht, Mathieu
AU - Salières, Pascal
AU - Pullerits, Tönu
AU - Martín, Fernando
AU - Argenti, Luca
AU - L’Huillier, Anne
PY - 2022/7
Y1 - 2022/7
N2 - 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.].
AB - 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.].
U2 - 10.1140/epjd/s10053-022-00438-y
DO - 10.1140/epjd/s10053-022-00438-y
M3 - Article
AN - SCOPUS:85133340454
VL - 76
JO - European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics
JF - European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics
SN - 1434-6060
IS - 7
M1 - 112
ER -