Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 48: Poster – Quantum Optics, Technologies, and Optomechanics
Q 48.51: Poster
Mittwoch, 12. März 2025, 17:00–19:00, Tent
Emission statistics and strong-field energy spectra for electron photoemission from nanometric needle tips using non-classical light — •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
Typical strong-field experiments investigate the interaction between intense classical light and matter, e.g. atoms or metal surfaces. This allows us to explore the electron dynamics in such a strong coherent light field. However, it is intriguing to study the influence of the driving state of light on strong-field effects. The development of intense sources of non-classical light such as bright squeezed vacuum (BSV) has made such studies experimentally feasible and thus established a new approach to the emerging field of strong-field quantum optics. When investigating nonlinear electron photoemission from needle tips using either coherent or BSV light, it was shown that the electron emission statistics is inherited from the photon statistics of the driving state of light [1]. Here, we will present these results as well as the first measurements of strong-field electron energy spectra driven by BSV. The study of these spectra allows to investigate also the strong-field electron dynamics in such an intense non-classical state of light.
[1] 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