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arXiv · 2411.13642

Designing Atomtronic Circuits via Superfluid Dynamics

Sarah Jährling·Vijay Pal Singh·Ludwig Mathey
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Abstract

We propose to design atomtronic circuits with Bose-Einstein condensates (BECs) in circuit-like traps that are controlled via mobile barriers. Using classical-field simulations, we demonstrate a universal set of logical gates and show how to assemble them into circuits. We first demonstrate an AND gate based on a T-shaped BEC, utilizing a combination of mobile and static barriers. The mobile barriers provide the logical input of the gate, while the static barrier functions as a Josephson junction that generates the AND output of the gate via a density imbalance across the barrier. Next we show how to combine three AND gates into a circuit, with a design composed of two T-shapes and an H-shape. Furthermore, we demonstrate how to use Josephson oscillations to create a NOT gate and combine it with an AND gate, thereby showcasing a universal set of gates and their assembly into circuits.

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Sarah Jährling, Vijay Pal Singh, Ludwig Mathey. 2024-11-20. Designing Atomtronic Circuits via Superfluid Dynamics. https://doi.org/10.1103/shm9-kl7r

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