Dynamics of Component Separation in a Binary Mixture of Bose-Einstein Condensates

1998/04/14 by D. S. Hall, M. R. Matthews, J. R. Ensher +4 · 985 citations
Physics and Astronomy · #Binary number #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Component (thermodynamics) #Computer science #Condensed matter physics #Dynamics (music) #Phase (matter) #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Relative phase #Spin (aerodynamics) #State (computer science) #Strong Light-Matter Interactions #Thermodynamics #Time evolution #cond-mat

paper · pdf · doi:10.1103/physrevlett.81.1539

published in Physical Review Letters 81(8), 1539-1542 (American Physical Society) · 4 pages, 5 figures

arxiv created 1998/04/14 · openalex publication_date 1998/08/24 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We describe the first experiments that study in a controlled way the dynamics of distinguishable and interpenetrating bosonic quantum fluids. We work with a two-component system of Bose-Einstein condensates in the |F\phantom\rule0ex0ex=\phantom\rule0ex0ex1,m_f\phantom\rule0ex0ex=\phantom\rule0ex0ex\ensuremath-1〉 and |2,1〉 spin states of ⁸⁷Rb. The two condensates are created with complete spatial overlap, and in subsequent evolution they undergo complex relative motions that tend to preserve the total density profile. The motions quickly damp out, leaving the condensates in a steady state with a non-negligible (and adjustable) overlap region.

Citations

• Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor
• Optical Confinement of a Bose-Einstein Condensate
• Bose-Einstein Condensation in a Gas of Sodium Atoms

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