Emerging ultrafast techniques for studying quantum materials

A Zong, BR Nebgen, SC Lin, JA Spies… - Nature Reviews …, 2023 - nature.com
In quantum materials, emergent functional properties resulting from strong correlations or
electronic topology offer opportunities for new applications. Over the past decade, ultrafast …

Lightwave electronics in condensed matter

M Borsch, M Meierhofer, R Huber, M Kira - Nature Reviews Materials, 2023 - nature.com
Key properties of quantum materials stem from dynamic interaction chains that connect
stable electronic quasiparticles through short-lived coherences, which are difficult to control …

Engineering symmetry breaking in 2D layered materials

L Du, T Hasan, A Castellanos-Gomez, GB Liu… - Nature Reviews …, 2021 - nature.com
Symmetry breaking in 2D layered materials plays a significant role in their macroscopic
electrical, optical, magnetic and topological properties, including, but not limited to, spin …

Tunable non-integer high-harmonic generation in a topological insulator

CP Schmid, L Weigl, P Grössing, V Junk, C Gorini… - Nature, 2021 - nature.com
When intense lightwaves accelerate electrons through a solid, the emerging high-order
harmonic (HH) radiation offers key insights into the material,,,,,,,,,–. Sub-optical-cycle …

Build-up and dephasing of Floquet–Bloch bands on subcycle timescales

S Ito, M Schüler, M Meierhofer, S Schlauderer… - Nature, 2023 - nature.com
Strong light fields have created opportunities to tailor novel functionalities of solids,,,–.
Floquet–Bloch states can form under periodic driving of electrons and enable exotic …

High-harmonic generation from topological surface states

Y Bai, F Fei, S Wang, N Li, X Li, F Song, R Li, Z Xu… - Nature Physics, 2021 - nature.com
Three-dimensional topological insulators are a phase of matter that hosts unique spin-
polarized gapless surface states that are protected by time-reversal symmetry. They exhibit …

Strong-field nano-optics

P Dombi, Z Pápa, J Vogelsang, SV Yalunin, M Sivis… - Reviews of Modern …, 2020 - APS
The present status and development of strong-field nano-optics, an emerging field of
nonlinear optics, is discussed. A nonperturbative regime of light-matter interactions is …

Observation of light-driven band structure via multiband high-harmonic spectroscopy

AJ Uzan-Narovlansky, Á Jiménez-Galán… - Nature …, 2022 - nature.com
Intense light–matter interactions have revolutionized our ability to probe and manipulate
quantum systems at sub-femtosecond timescales, opening routes to the all-optical control of …

Floquet engineering of strongly driven excitons in monolayer tungsten disulfide

Y Kobayashi, C Heide, AC Johnson, V Tiwari, F Liu… - Nature Physics, 2023 - nature.com
Interactions of quantum materials with strong laser fields can induce exotic non-equilibrium
electronic states,,,,–. Monolayer transition metal dichalcogenides, a new class of direct-gap …

Attosecond clocking of correlations between Bloch electrons

J Freudenstein, M Borsch, M Meierhofer, D Afanasiev… - Nature, 2022 - nature.com
Delocalized Bloch electrons and the low-energy correlations between them determine key
optical, electronic and entanglement functionalities of solids, all the way through to phase …