Noise induced current in a double-well trap

TL;DR

This paper investigates how noise can induce a current in cold atoms trapped in double-well potentials, even when tunneling is suppressed, highlighting potential experimental tests with engineered environments.

Contribution

It demonstrates that noise can generate a current in double-well traps under conditions where tunneling is minimal, revealing a novel noise-induced transport phenomenon.

Findings

Noise induces current in double-well traps.

Current occurs even in Mott insulator phase.

Engineered environments can test this behavior.

Abstract

We study the behavior of cold atoms trapped in optical double well potentials in presence of noise, either generated by an external environment or by the trap itself. We show that quite in general the noise can induce a current between the two wells even when tunneling between the two wells is highly suppressed (Mott insulator phase). An engineered environment could provide a test ground for the behavior of such a current.