Nonlinear dissipative dynamics of a two-component atomic condensate coupling with a continuum

TL;DR

This paper explores how nonlinear dissipation influences the coherence and population dynamics in a two-component atomic Bose-Einstein condensate coupled with a continuum, revealing control mechanisms for state switching.

Contribution

It introduces a model of a two-component condensate with continuum coupling, highlighting the role of dissipation and nonlinearity in coherence bifurcation and state control.

Findings

Dissipation can enhance coherence among condensed atoms.

Steady states depend on dissipation and nonlinear interactions.

Dissipation and nonlinearity enable control of state switching.

Abstract

We investigate the nonlinear dissipative coherence bifurcation and population dynamics of a two-component atomic Bose-Einstein condensate coupling with a continuum. The coupling between the two-component condensates and the continuum brings effective dissipations to the two-component condensates. The steady states and the coherence bifurcation depend on both dissipation and the nonlinear interaction between condensed atoms. The coherence among condensed atoms may be even enhanced by the effective dissipations. The combination of dissipation and nonlinearity allows one to control the switching between different self-trapped states or the switching between a self-trapped state and a non-self-trapped state.