Persistent current oscillations in a double-ring quantum gas

Thomas Bland

doi:10.1103/PhysRevResearch.4.043171

Persistent current oscillations in a double-ring quantum gas

2022-12-08

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DOI：10.1103/PhysRevResearch.4.043171

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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.

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DYNAMICS

Persistent current oscillations in a double-ring quantum gas

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