Observation of St\"{u}ckelberg oscillations in accelerated optical lattices

TL;DR

This paper reports the experimental observation of St"{u}ckelberg oscillations in matter waves within optical lattices, highlighting the effects of phase accumulation between successive Brillouin zone crossings and aligning with a Landau-Zener tunneling model.

Contribution

First experimental observation of St"{u}ckelberg oscillations in optical lattice matter waves, extending understanding of Landau-Zener tunneling effects.

Findings

Observed St"{u}ckelberg oscillations experimentally.

Results agree with a Landau-Zener tunneling model.

Analyzed phase effects between Brillouin zone crossings.

Abstract

We report the experimental observation of St\"{u}ckelberg oscillations of matter waves in optical lattices. Extending previous work on Landau-Zener tunneling of Bose-Einstein condensates in optical lattices, we study the effects of the accumulated phase between two successive crossings of the Brillouin zone edge. Our results agree well with a simple model for multiple Landau-Zener tunneling events taking into account the band structure of the optical lattice.