Dr. Christian Heide, University of Central Florida, USA

Bibliothek, A.2.500, Staudtstr. 2

Location details

Abstract:

Precisely tailored light fields have recently opened possibilities for coherently controlling electron dynamics in solids and nanostructures (1-2). In solid-state systems, these intense, non-perturbative interactions have enabled novel spectroscopic approaches, such as high-harmonic generation (3-5) and sub-cycle interferometry (6), providing insights into electronic dephasing processes and topological surface states. In nanoscale systems, the ability to manipulate electron emission using controlled light fields has facilitated the development of attosecond-scale electronic gates, effectively serving as petahertz oscilloscopes for electric field sampling (7).

In the first part of this talk, I will introduce and review these emerging methodologies, emphasizing electric field sampling, Floquet engineering of excitonic states in layered materials, and high-harmonic spectroscopy applied to quantum materials. In the second part I will discuss how precise control of optical fields may pave the way for room-temperature quantum electronics enabled by ultrafast quantum control.

[1] CH, PD Keathley, MF Kling, Nature Review Physics 6, 648-662 (2024)
[2] CH, Y Kobayashi, S Haue, S Ghimire, Nature Physics 30, 1546-1557 (2024)
[3] CH Y Kobayashi, AC Johnson, TF Heinz, DA Reis, F Liu, S Ghimire, Nanophotonics 12, 255 (2023)
[4] CH, Y Kobayashi, D Baykusheva, D Jain, JA Sobota, M Hashimoto, P Kirchmann, S Oh, T Heinz, D Reis, S Ghimire, Nat. Phot. 16, 620 (2022)
[5] C Heide, Y Kobayashi, AC Johnson, F Liu, TF Heinz, DA Reis, S Ghimire, Optics 9, 512 (2022)
[6] T Weitz, C Heide, P Hommelhoff, PRL 132, 206901 (2024)
[7] MR Bionta, F Ritzkowsky, M Turchetti, Y Yang, D Mor, P Putnam, FX Kärtner, K Berggren, PD Keathley, Nature Photonics 15, 456-460 (2021)
[8] Y Kobayashi, C Heide, AC Johnson, V Tiwari, F Liu, DA Reis, TF Heinz, S Ghimire, Nature Physics 19, 171-176 (2023)