Persistent current oscillations in a double-ring quantum gas
arXiv:2204.14120 · doi:10.1103/PhysRevResearch.4.043171
Abstract
Vorticity in closed quantum fluid circuits is known to arise in the form of persistent currents. In this work, we develop a method to engineer transport of the quantized vorticity between density-coupled ring-shaped atomic Bose-Einstein condensates in experimentally accessible regimes. Introducing a tunable weak link between the rings, we observe and characterize the controllable periodic transfer of the current and investigate the role of temperature on suppressing these oscillations via a range of complementary state-of-the-art numerical methods. Our setup paves the way for precision measurements of local acceleration and rotation.
12 pages, 6 figures
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- Injection and nucleation of topological defects in the quench dynamics of the Frenkel-Kontorova model
- Engineering phase and density of Bose-Einstein condensates in curved waveguides with toroidal topology
- Josephson vortices and persistent current in a double-ring supersolid system
- Quantum vacuum effects in non-relativistic quantum field theory
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- Dissipation induced elastic-mode instability with topological excitation in holographic non-equilibrium steady cnoidal wave supersolid