OSE Seminar: Encore of Special Joint OSE Seminar and P&A Colloquium by Prof. Alfred Leitenstorfer on Electrons and Photons under Elementary Confinement in Time and Space

Departmental News

Alfred Leitenstorfer 225 x 300

Posted: April 19, 2021

Date: Thursday, April 22, 2021 

Time:  11:00 AM to Noon

Location:  via Zoom

Please join us on Zoom


Please ask P&A Department for the Zoom password.


This week's P&A Colloquium (joint with OSE) will be given by Prof.  Alfred Leitenstorfer from the University of Konstanz, Germany. Prof. Leitenstorfer is a highly prolific and internationally renowned experimental physicist in the field of ultrafast quantum optics. His group has produced landmark results on light-matter coherent interactions, quantum optics as well as novel ultrashort pulse laser developments. 

Prof. Leitenstorfer's talk, titled " Electrons and Photons under Elementary Confinement in Time and Space", showcases his group's recent accomplishments.


This talk summarizes studies of condensed-matter electronic systems and the radiation field in situations where their dimensions are confined to scales below the wavelength and/or oscillation cycles of elementary excitations. First, few fermions in individual semiconductor quantum dots are investigated. Here, full spatial confinement and the Pauli principle lead to quantum phenomena far from equilibrium such as coherence transfer in exciton-phonon interaction and persistent quantum beats of hot trion states [1]. The second part introduces the concept of transient Wannier-Stark localization. A two-dimensional character of the electronic system of a bulk semiconductor emerges under subcycle biasing with mid-infrared fields of intramolecular strength [2]. Next, the attosecond transport of single electrons is controlled with phase-locked single-cycle pulses in the near infrared applied to plasmonic nanoantennas [3]. At present, we are reducing these structures to the atomic scale. Finally, the status of our efforts is presented to establish and analyze time-domain quantum electrodynamics based on ultrabroadband electro-optic sampling in theory and experiment [4,5].

[1] P. Henzler et al., Phys. Rev. Lett. 126, 067402 (2021)

[2] C. Schmidt et al., Nature Comms. 9, 2890 (2018)

[3] M. Ludwig et al., Nature Phys. 16, 341 (2020)

[4] M. Kizmann et al., Nature Phys. 15, 960 (2019)

[5] P. Sulzer et al., Phys. Rev. A 101, 033821 (2020)