Attosecond two-photon interferometry for doubly excited states of helium

We show that the correlation dynamics in coherently excited doubly excited resonances of helium can be followed in real time by two-photon interferometry. This approach promises to map the evolution of the two-electron wave packet onto experimentally easily accessible noncoincident single-electron s...

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Bibliographic Details
Published in:Physical review letters 2011-08, Vol.107 (9), p.093005-093005, Article 093005
Main Authors: Feist, J, Nagele, S, Ticknor, C, Schneider, B I, Collins, L A, Burgdörfer, J
Format: Article
Language:English
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Summary:We show that the correlation dynamics in coherently excited doubly excited resonances of helium can be followed in real time by two-photon interferometry. This approach promises to map the evolution of the two-electron wave packet onto experimentally easily accessible noncoincident single-electron spectra. We analyze the interferometric signal in terms of a semianalytical model which is validated by a numerical solution of the time-dependent two-electron Schrödinger equation in its full dimensionality.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.107.093005