Atomic current across an optical lattice

TL;DR

This paper presents a microscopic model explaining how fermionic atomic currents can be induced and controlled across a tilted optical lattice, demonstrating tunable conductance behaviors.

Contribution

It introduces a novel microscopic model that captures collision-induced atomic currents and their tunable conductance properties in optical lattices.

Findings

Switch from Ohmic to negative differential conductance with parameter tuning

Demonstration of collision-induced atomic current across optical lattices

Control of atomic current behavior via microscopic parameters

Abstract

We devise a microscopic model for the emergence of a collision-induced, fermionic atomic current across a tilted optical lattice. Tuning the - experimentally controllable - parameters of the microscopic dynamics allows to switch from Ohmic to negative differential conductance.