Resonantly enhanced tunneling of Bose-Einstein condensates in periodic potentials

TL;DR

This paper reports on experimental observations of resonantly enhanced tunneling in Bose-Einstein condensates within optical lattices, highlighting the effects of initial conditions and nonlinearity on tunneling resonances.

Contribution

It demonstrates control over tunneling resonances in BECs and explores the influence of nonlinearity, providing new insights into quantum tunneling phenomena in optical lattices.

Findings

Resonant tunneling observed in ground and excited states.

Initial conditions significantly affect tunneling behavior.

Nonlinearity modifies the tunneling resonances.

Abstract

We report on measurements of resonantly enhanced tunneling of Bose-Einstein condensates loaded into an optical lattice. By controlling the initial conditions of our system we were able to observe resonant tunneling in the ground and the first two excited states of the lattice wells. We also investigated the effect of the intrinsic nonlinearity of the condensate on the tunneling resonances.