2015/12/04 by Yujiro Eto, Masahiro Takahashi, Masaya Kunimi +2 · 1 citation
Physics and Astronomy · #Binary number #Cold Atom Physics and Bose-Einstein Condensates #Degrees of freedom (physics and chemistry) #Dust and Plasma Wave Phenomena #Dynamics (music) #Excited state #Miscibility #Mixing (physics) #Non-equilibrium thermodynamics #Oscillation (cell signaling) #Strong Light-Matter Interactions #cond-mat.quant-gas
paper · pdf · doi:10.1088/1367-2630/18/7/073029
5 pages, 4 figures
arxiv created 2015/12/04 · openalex created_date 2016/06/24 · openalex publication_date 2016/07/14 · arxiv updated 2016/08/03 · openalex updated_date 2026/08/06
We have observed and characterized the nonequilibrium spatial dynamics of a two-component 87 Rb Bose–Einstein condensate (BEC) that is controllable switched back and forth between the miscible and immiscible phases of the phase separation transition by changing the internal states of the 87 Rb atoms. The subsequent evolution exhibits large scale oscillations of the spatial structure that involve component mixing and separation. We show that the larger total energy of the miscible system results in a higher oscillation frequency. This investigation introduces a new technique to control the miscibility and the spatial degrees of freedom in atomic BECs.