Hannover 2016 – scientific programme

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A: Fachverband Atomphysik

A 16: Collisions, scattering and correlation phenomena II

A 16.6: Talk

Tuesday, March 1, 2016, 16:00–16:15, f142

Quantum interference in bichromatic Kapitza-Dirac scattering — •Matthias Maximilian Dellweg and Carsten Müller — Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf

In this contribution, we study Kapitza-Dirac scattering of an electron from a bichromatic standing light wave of commensurate frequency ratio. On the one hand, we investigate the underlying quantum dynamics within a dimensionally reduced model based on the involved ponderomotive potentials. This approach is complemented, on the other hand, by numerical simulations of the associated Schrödinger equation [1]. Our analysis allows us to predict the Rabi frequency of the only possible scattering transition in the Bragg regime. Furthermore we describe how this frequency can be coherently controlled -- up to total suppression -- by quantum interference via variations of the laser parameters.

[1] M. M. Dellweg and C. Müller, Phys. Rev. A 91 (2015) 062102