Coherent Electron Trajectory Control in Graphene

Heide C, Higuchi T, Weber HB, Hommelhoff P (2018)

Publication Language: English

Publication Type: Journal article, Letter

Publication year: 2018


Book Volume: 121

Article Number: 207401


DOI: 10.1103/PhysRevLett.121.207401


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.

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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).

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