Acceleration-induced transport of quantum vortices in joined atomtronic circuits

• URL: http://arxiv.org/abs/2410.23818v1
• Date: Thu, 31 Oct 2024 11:02:10 GMT
• Title: Acceleration-induced transport of quantum vortices in joined atomtronic circuits
• Authors: A. Chaika, A. O. Oliinyk, I. V. Yatsuta, N. P. Proukakis, M. Edwards, A. I. Yakimenko, T. Bland,
• Abstract summary: acceleration influences transfer of persistent currents between two density-connected, ring-shaped atomic Bose-Einstein condensates. We find that the acceleration modifies both the density and phase dynamics between the rings, leading to a bias in the periodic vortex oscillations. We analyze how this transfer depends on the weak-link amplitude, the initial persistent current configuration, and the acceleration strength and direction.
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• Abstract: Persistent currents--inviscid quantized flow around an atomic circuit--are a crucial building block of atomtronic devices. We investigate how acceleration influences the transfer of persistent currents between two density-connected, ring-shaped atomic Bose-Einstein condensates, joined by a tunable weak link that controls system topology. We find that the acceleration of this system modifies both the density and phase dynamics between the rings, leading to a bias in the periodic vortex oscillations studied in T. Bland et al., Phys. Rev. Research 4, 043171 (2022). Accounting for dissipation suppressing such vortex oscillations, the acceleration facilitates a unilateral vortex transfer to the leading ring. We analyze how this transfer depends on the weak-link amplitude, the initial persistent current configuration, and the acceleration strength and direction. Characterization of the sensitivity to these parameters paves the way for a new platform for acceleration measurements.

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