Generation of mesoscopic superpositions of a binary Bose-Einstein condensate in a slightly asymmetric double well

TL;DR

This paper demonstrates that mesoscopic superpositions of a binary Bose-Einstein condensate can be generated in a double well even with slight asymmetries, extending previous idealized models to more realistic conditions.

Contribution

It shows through numerical simulations that mesoscopic superpositions are achievable despite small asymmetries, improving the robustness of the generation scheme.

Findings

Mesoscopic superpositions can be generated with slight asymmetries.

Asymmetries do not completely destroy entanglement.

Numerical evidence supports the scheme's feasibility under realistic conditions.

Abstract

A previous publication [Europhysics Letters 78, 10009 (2007)] suggested to coherently generate mesoscopic superpositions of a two-component Bose-Einstein condensate in a double well under perfectly symmetric conditions. However, already tiny asymmetries can destroy the entanglement properties of the ground state. Nevertheless, even under more realistic conditions, the scheme is demonstrated numerically to generate mesoscopic superpositions.