Regensburg 2019 – wissenschaftliches Programm
SYCZ 1.2: Hauptvortrag
Donnerstag, 4. April 2019, 10:00–10:30, H4
Terahertz subcycle charge and spin control — •Rupert Huber — Department of Physics, University of Regensburg, 93040 Regensburg
With conventional electronics approaching its ultimate limits, novel concepts of fast quantum control have been sought after. Lightwave electronics -- the foundation of attosecond science -- has opened a new arena by utilizing the oscillating carrier wave of intense light pulses to control electrons faster than a cycle of light. We employ atomically strong terahertz electromagnetic pulses to drive Bloch oscillations, quasiparticle collisions, and high-harmonic generation in bulk and atomically thin semiconductors. In monolayers of transition metal dichalcogenides, we switch the electrons' valley pseudospin and we resolve subcycle terahertz-driven spin switching in an antiferromagnet, opening the door to valleytronics and spintronics at multi-terahertz clock rates.