2005/01/27 by Ö. E. Müstecaplıoğlu, M. Zhang, Mei Zhang +2 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Field (mathematics) #Magnetic field #Magnetization #Mathematics #Physics #Quantum Information and Cryptography #Quantum mechanics #Quantum tunnelling #Spin (aerodynamics) #Spins #Strong Light-Matter Interactions #cond-mat.other #physics.atom-ph #quant-ph
paper · pdf · doi:10.1103/physreva.71.053616
5 pages, 5 figures, submitted to Physical Review A
arxiv created 2005/01/27 · openalex publication_date 2005/05/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study quantum dynamical properties of a spin-1 atomic Bose-Einstein condensate in a double-well potential. Adopting a mean field theory and single spatial mode approximation, we characterize our model system as two coupled spins. For certain initial states, we find full magnetization oscillations between wells not accompanied by mass (or atom numbers) exchange. We identify dynamic regimes of collective spin variables arising from nonlinear self-interactions that are different from the usual Josephson oscillations. We also discuss magnetization beats and incomplete oscillations of collective spin variables other than the magnetization. Our study points to an alternative approach to observe coherent tunnelling of a condensate through a (spatial) potential barrier.