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MO: Fachverband Molekülphysik
MO 8: Strong-Field and Ultrafast Phenomena (joint session Q/MO)
MO 8.4: Talk
Tuesday, March 11, 2025, 12:00–12:15, HS V
Strong-field electron dynamics in non-classical light after photoemission from nanometric needle tips — •Jonathan Pölloth1, Jonas Heimerl1, Andrei Rasputnyi2, Stefan Meier1, Maria Chekhova1,2, and Peter Hommelhoff1,2,3 — 1Department Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen — 2Max-Planck-Institut für die Physik des Lichts (MPL), 91058 Erlangen — 3Department Physik, Ludwig-Maximilians-Universität München (LMU), 80799 München
In the past, strong-field physics and quantum optics were two seemingly unrelated fields of research. However, in recent years, the development of intense non-classical light sources such as bright squeezed vacuum (BSV) has made it possible to connect these topics and to explore nonlinear interaction processes between intense quantum light and matter. Recent theoretical [1] and experimental [2] studies investigate the influence of the quantum state of light on strong-field processes such as high harmonic generation. For the case of nonlinear electron photoemission from needle tips, it was shown that the electrons inherit the number statistics of the driving light state [3]. Here, we will present the first measurements of strong-field electron energy spectra for photoemission from nanometric needle tips driven by BSV and explain them based on the theoretical frameworks.
[1] A. Gorlach et al., Nat. Phys. 19, 1689-1696 (2023)
[2] A. Rasputnyi et al., Nat. Phys. (2024)
[3] J. Heimerl et al., Nat. Phys. 20, 945-950 (2024)
Keywords: strong-field physics; bright squeezed vacuum; strong-field quantum optics; needle tips; electron photoemission