Coherent Electron Trajectory Control in Graphene

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autor(en): Heide C, Higuchi T, Weber HB, Hommelhoff P
Zeitschrift: Physical Review Letters
Jahr der Veröffentlichung: 2018
Band: 121
ISSN: 0031-9007
Sprache: Englisch


We investigate coherent electron dynamics in graphene, interacting with
the electric field waveform of two orthogonally polarized, few-cycle
laser pulses. Recently, we demonstrated that linearly polarized driving
pulses lead to sub-optical-cycle Landau-Zener quantum path interference
by virtue of the combination of intraband motion and interband
transition [Higuchi et al., Nature 550, 224 (2017)].
Here we introduce a pulsed control laser beam, orthogonally polarized
to the driving pulses, and observe the ensuing electron dynamics. The
relative delay between the two pulses is a tuning parameter to control
the electron trajectory, now in a complex fashion exploring the full
two-dimensional reciprocal space in graphene. Depending on the relative
phase, the electron trajectory in the reciprocal space can, e.g., be
deformed to suppress the quantum path interference resulting from the
driving laser pulse. Intriguingly, this strong-field-based complex
matter wave manipulation in a two-dimensional conductor is driven by a
high repetition rate laser oscillator, rendering unnecessary complex and expensive amplified laser systems.

FAU-Autoren / FAU-Herausgeber

Heide, Christian
Lehrstuhl für Laserphysik
Higuchi, Takuya Dr.
Lehrstuhl für Laserphysik
Hommelhoff, Peter Prof. Dr.
Lehrstuhl für Laserphysik
Weber, Heiko B. Prof. Dr.
Lehrstuhl für Angewandte Physik

Zusätzliche Organisationseinheit(en)
Sonderforschungsbereich 953/2 Synthetische Kohlenstoffallotrope


Heide, C., Higuchi, T., Weber, H.B., & Hommelhoff, P. (2018). Coherent Electron Trajectory Control in Graphene. Physical Review Letters, 121.

Heide, Christian, et al. "Coherent Electron Trajectory Control in Graphene." Physical Review Letters 121 (2018).


Zuletzt aktualisiert 2018-07-12 um 13:53