Internal Josephson-Like Tunneling in Two-Component Bose-Einstein Condensates Affected by Sign of the Atomic Interaction and External Trapping Potential

TL;DR

This paper investigates how Josephson-like tunneling in two-component Bose-Einstein condensates can be controlled by atomic interactions, trapping potential geometry, and gravitational effects, revealing diverse dynamical behaviors.

Contribution

It demonstrates the influence of atomic interaction sign and external potential on tunneling dynamics, providing new insights into controllable quantum tunneling phenomena.

Findings

Tunneling dynamics can be tuned from damped to nondamped oscillations.

Asymmetry in occupation can be controlled by interaction parameters.

External factors like gravity significantly affect tunneling behavior.

Abstract

We study the Josephson-like tunneling in two-component Bose-Einstein condensates coupled with microwave field in respond to various attractive and repulsive atomic interaction under the various aspect ratio of trapping potential and the gravitational field. It is very interesting to find that the dynamic of Josephson-like tunneling can be controlled from fast damped oscillations and asymmetric occupation to nondamped oscillation and symmetric occupation.