Observation of Massless and Massive Collective Excitations with Faraday Patterns in a Two-Component Superfluid
Quantum Gases
2022-06-06 v2
Abstract
We report on the experimental measurement of the dispersion relation of the density and spin collective excitation modes in an elongated two-component superfluid of ultracold bosonic atoms. Our parametric spectroscopic technique is based on the external modulation of the transverse confinement frequency, leading to the formation of density and spin Faraday waves. We show that the application of a coherent coupling between the two components reduces the phase symmetry and gives a finite mass to the spin modes.
Keywords
Cite
@article{arxiv.2112.09880,
title = {Observation of Massless and Massive Collective Excitations with Faraday Patterns in a Two-Component Superfluid},
author = {Riccardo Cominotti and Anna Berti and Arturo Farolfi and Alessandro Zenesini and Giacomo Lamporesi and Iacopo Carusotto and Alessio Recati and G. Ferrari},
journal= {arXiv preprint arXiv:2112.09880},
year = {2022}
}
Comments
10 pages, 7 figures