1. Lightwave control of the valley pseudospin in a monolayer of tungsten diselenide
- Author
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Schmid Christoph P., Langer Fabian, Schlauderer Stefan, Gmitra Martin, Fabian Jaroslav, Nagler Philipp, Schuller Christian, Korn Tobias, Hawkins Peter G., Steiner Johannes T., Huttner Ulrich, Koch Stephan W., Kira Mackillo, and Huber Rupert
- Subjects
Physics ,QC1-999 - Abstract
As conventional electronic is approaching its ultimate limits, tremendous efforts have been taken to explore novel concepts of ultrafast quantum control. Lightwave electronics - the foundation of attosecond science - has opened a spectacular perspective by utilizing the oscillating carrier wave of an intense light pulse to control the translational motion of the electron’s charge faster than a single cycle of light [1-7]. Despite their promising potential as future information carriers [8,10], the internal quantum attributes such as spins and valley pseudospins have not been switchable at optical clock rates. Here we demonstrate a novel subcycle control scheme of the electron’s pseudospin in a monolayer of tungsten diselenide using strong mid-infrared lightwaves [9]. Our work opens the door towards systematic valleytronic protocols at optical clock rates.
- Published
- 2019
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