Entangled quantum tunneling of two-component Bose-Einstein condensates

TL;DR

This paper investigates a novel entangled tunneling phenomenon in two-component Bose-Einstein condensates, revealing conditions for pair tunneling and its role in generating quantum entanglement between macroscopic systems.

Contribution

It introduces a new tunneling mechanism enabled by interspecies interaction, eliminating self-trapping and leading to entanglement in two-component condensates.

Findings

Particles can tunnel as pairs in opposite directions.

Interspecies interaction enables pair tunneling.

Quantum entanglement is generated between condensates.

Abstract

We examine the quantum tunneling process in Bose condensates of two interacting species trapped in a double well configuration. We discover the condition under which particles of different species can tunnel as pairs through the potential barrier between two wells in opposition directions. This novel form of tunneling is due to the interspecies interaction that eliminates the self- trapping effect. The correlated motion of tunneling atoms leads to the generation of quantum entanglement between two macroscopically coherent systems.