Generating persistent-current superpositions in Bose-Einstein condensates using dynamic optical potentials

Abstract:Precise and flexible manipulation of the motional state of ultracold atoms is a fundamental enabling technology for diverse applications such as quantum sensing and quantum computation. In this paper we propose a general, simple and highly efficient method to engineer the motional state of a Bose-Einstein condensate with time-dependent optical fields, which can be realized experimentally with existing light sculpting techniques. We demonstrate numerically how to engineer superpositions of persistent currents in a toroidal trap, achieving very high fidelity. We also study in detail the stability of the state over time, and we present an analytical two-state model that approximates well the evolution of the state in presence of self-interactions.

Quantum Gases (cond-mat.quant-gas); Quantum Physics (quant-ph)

arXiv:2601.21144 [cond-mat.quant-gas]

(or arXiv:2601.21144v2 [cond-mat.quant-gas] for this version)

https://doi.org/10.48550/arXiv.2601.21144 Focus to learn more arXiv-issued DOI via DataCite

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