Transparent, Non-local, Species-selective Transport in an Optical Superlattice Containing Two Interacting Atom Species

TL;DR

This paper demonstrates a robust method for species-selective transport in an optical superlattice, allowing one atom species to pass through another with minimal overlap, enabling controlled interactions and state changes.

Contribution

It introduces a novel transport protocol in optical superlattices that is robust against atom loss and lattice fluctuations, with tunable overlap for controlled interactions.

Findings

Species-selective transport achieved in optical superlattice

Protocol robust against atom loss and lattice fluctuations

Controlled large-scale interaction-induced state changes

Abstract

In an optical superlattice of triple wells, containing two mutually interacting atom species in adjacent wells, we show that one species can be transported through the positions of the other species, yet avoiding significant overlap and direct interaction. The transfer protocol is optimized to be robust against missing atoms of either species in any lattice site, as well as against lattice fluctuations. The degree and the duration of the inter-species overlap during passage can be tuned, making possible controlled large-scale interaction-induced change of internal states.