Spin-dipole oscillation and polarizability of a binary Bose-Einstein condensate near the miscible-immiscible phase transition

Tom Bienaimé, Eleonora Fava, Giacomo Colzi, Carmelo Mordini, Simone Serafini, Chunlei Qu, Sandro Stringari, Giacomo Lamporesi, and Gabriele Ferrari
Phys. Rev. A 94, 063652 – Published 30 December 2016

Abstract

We report on the measurement of the spin-dipole (SD) polarizability and of the frequency of the SD oscillation of a two-component Bose-Einstein condensate of sodium atoms occupying the |32S1/2,F=1,mF=±1 hyperfine states. This binary spin mixture presents the important properties of being, at the same time, fully miscible and rid of the limit set by buoyancy. It is also characterized by a huge enhancement of the SD polarizability and by the consequent softening of the frequency of the SD oscillation, due to the vicinity to the transition to the immiscible phase. The experimental data are successfully compared with the predictions of theory.

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  • Received 15 July 2016
  • Revised 30 August 2016

DOI:https://doi.org/10.1103/PhysRevA.94.063652

©2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsAtomic, Molecular & Optical

Authors & Affiliations

Tom Bienaimé1,*, Eleonora Fava1, Giacomo Colzi1,2, Carmelo Mordini1, Simone Serafini1, Chunlei Qu1, Sandro Stringari1,2, Giacomo Lamporesi1,2, and Gabriele Ferrari1,2

  • 1INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, Povo 38123, Italy
  • 2Trento Institute for Fundamental Physics and Applications, INFN, Povo 38123, Italy

  • *tom.bienaime@unitn.it

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Issue

Vol. 94, Iss. 6 — December 2016

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