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arXiv · 2204.14120

Persistent current oscillations in a double-ring quantum gas

T. Bland·I. V. Yatsuta·M. Edwards·Y. O. Nikolaieva·A. O. Oliinyk·A. I. Yakimenko·N. P. Proukakis
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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.

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T. Bland, I. V. Yatsuta, M. Edwards, Y. O. Nikolaieva, A. O. Oliinyk, A. I. Yakimenko, N. P. Proukakis. 2022-04-29. Persistent current oscillations in a double-ring quantum gas. https://doi.org/10.1103/physrevresearch.4.043171

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