Terahertz Quasiparticle Acceleration: From Electron-Hole Collisions to Lightwave Valleytronics

F. Langer, C. P. Schmid, S. Schlauderer, P. Nagler, C. Schuller, T. Korn, M. Gmitra, J. Fabian, P. G. Hawkins, J. T. Steiner, U. Huttner, Stephan W Koch, M. Kira, R. Huber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Intense lightwaves can accelerate quasiparticles inside solids. This strong-field light-matter interaction results in the emission of high-harmonic or high-order sideband radiation. While the former process relies on a complex coupling between simultaneously driven interband polarization and intraband currents, high-order sidebands originate from a ballistic acceleration of the quasiparticles within the bands. This mechanism allows for the implementation of a quasiparticle collider in order to study those entities in close analogy to conventional collision experiments. Accelerating electrons and holes in a monolayer of transition metal dichalcogenides extends this scheme to internal quantum degrees of freedom. Our experiments show a lightwave-indu-ced switching of the valley pseudospin, paving the way to ultimately fast valleytronics.

Original languageEnglish (US)
Title of host publication2018 43rd International Conference on Infrared Millimeter and Terahertz Waves, IRMMW-THz 2018
PublisherIEEE Computer Society
Volume2018-September
ISBN (Electronic)9781538638095
DOIs
StatePublished - Oct 25 2018
Externally publishedYes
Event43rd International Conference on Infrared Millimeter and Terahertz Waves, IRMMW-THz 2018 - Nagoya, Japan
Duration: Sep 9 2018Sep 14 2018

Other

Other43rd International Conference on Infrared Millimeter and Terahertz Waves, IRMMW-THz 2018
CountryJapan
CityNagoya
Period9/9/189/14/18

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Langer, F., Schmid, C. P., Schlauderer, S., Nagler, P., Schuller, C., Korn, T., Gmitra, M., Fabian, J., Hawkins, P. G., Steiner, J. T., Huttner, U., Koch, S. W., Kira, M., & Huber, R. (2018). Terahertz Quasiparticle Acceleration: From Electron-Hole Collisions to Lightwave Valleytronics. In 2018 43rd International Conference on Infrared Millimeter and Terahertz Waves, IRMMW-THz 2018 (Vol. 2018-September). [8510268] IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz.2018.8510268