Nonlinear quantum control of Landau systems beyond Kohn's theorem

C. Lange, T. Maag, A. Bayer, S. Baierl, M. Hohenleutner, D. Schuh, D. Bougeard, R. Huber, M. Mootz, J. E. Sipe, Stephan W Koch, M. Kira

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

Abstract

Controlling superpositions of electronic quantum states through nonlinear interactions is central to quantum computing. At THz frequencies, solid-state systems exhibit numerous elementary excitations suitable to this purpose, yet efficient dephasing mechanisms render their exploitation challenging. The cyclotron resonance, protected from Coulomb interactions by Kohn's theorem, is a unique exception. Here, single-cycle THz transients of an amplitude of up to 8.7 kVcm-1 facilitate coherent quantum control of a Landau system, leading to anharmonic Landau ladder climbing up to the 6th rung, and population inversion. Strong coherent nonlinearities including four- and six-wave mixing revealed through two-dimensional THz spectroscopy unveil dynamic Coulomb interactions in a setting of nonperturbative light-matter interaction, beyond Kohn's theorem.

Original languageEnglish (US)
Title of host publication41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
PublisherIEEE Computer Society
Volume2016-November
ISBN (Electronic)9781467384858
DOIs
StatePublished - Nov 28 2016
Externally publishedYes
Event41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 - Copenhagen, Denmark
Duration: Sep 25 2016Sep 30 2016

Other

Other41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
CountryDenmark
CityCopenhagen
Period9/25/169/30/16

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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