Outcoupling vector solitons from a Bose-Einstein condensate with time-dependent interatomic forces

TL;DR

This paper explores how to generate and control vector solitons in a two-component Bose-Einstein condensate by dynamically tuning interatomic interactions, revealing novel phenomena not present in single-species systems.

Contribution

It demonstrates new methods for outcoupling and manipulating vector solitons using time-dependent interspecies forces in BECs, including the implementation of supersolitons.

Findings

Vector soliton outcoupling achieved by tuning interspecies interactions.

Control of one species' evolution via the other in a two-component BEC.

Proposal and analysis of supersolitons in the system.

Abstract

We discuss the possibility of emitting vector solitons from a two-component elongated BEC by manipulating in time the inter- or intra-species scattering lengths with Feshbach resonance tuning. We present different situations which do not have an analogue in the single species case. In particular, we show vector soliton out-coupling by tuning the interspecies forces, how the evolution in one species is controlled by tuning the dynamics of the other, and how one can implement the so-called supersolitons. The analysis is performed by numerical simulations of the one-dimensional Gross-Pitaevskii equation. Simple analytic arguments are also presented in order to give a qualitative insight.