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arXiv · 2101.12643

Manipulation of an elongated internal Josephson junction of bosonic atoms

A. Farolfi·A. Zenesini·R. Cominotti·D. Trypogeorgos·A. Recati·G. Lamporesi·G. Ferrari
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Abstract

We report on the experimental characterization of a spatially extended Josephson junction realized with a coherently-coupled two-spin-component Bose-Einstein condensate. The cloud is trapped in an elongated potential such that that transverse spin excitations are frozen. We extract the non-linear parameter with three different manipulation protocols. The outcomes are all consistent with a simple local density approximation of the spin hydrodynamics, i.e., of the so-called Bose-Josephson junction equations. We also identify a method to produce states with a well defined uniform magnetization.

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A. Farolfi, A. Zenesini, R. Cominotti, D. Trypogeorgos, A. Recati, G. Lamporesi, G. Ferrari. 2021-01-29. Manipulation of an elongated internal Josephson junction of bosonic atoms. https://doi.org/10.1103/physreva.104.023326

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