| Texto completo | |
| Autor(es): |
Donato, Mario H. Figlioli
;
Muniz, Sergio R.
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | SYMMETRY-BASEL; v. 14, n. 5, p. 12-pg., 2022-05-01. |
| Resumo | |
Josephson junctions are essential ingredients in the superconducting circuits used in many existing quantum technologies. Additionally, ultracold atomic quantum gases have also become essential platforms to study superfluidity. Here, we explore the analogy between superconductivity and superfluidity to present an intriguing effect caused by a thin finite barrier in a quasi-one-dimensional toroidal spinor Bose-Einstein condensate (BEC). In this system, the atomic current density flowing through the edges of the barrier oscillates, such as the electrical current through a Josephson junction in a superconductor, but in our case, there is no current circulation through the barrier. We also show how the nontrivial broken-symmetry states of spinor BECs change the structure of this Josephson-like current, creating the possibility to probe the spinor symmetry, solely using measurements of this superfluid current. (AU) | |
| Processo FAPESP: | 13/07276-1 - CEPOF - Centro de Pesquisa em Óptica e Fotônica |
| Beneficiário: | Vanderlei Salvador Bagnato |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |
| Processo FAPESP: | 19/27471-0 - Desenvolvimento de novas plataformas experimentais para o estudo de nanotermodinâmica e a relação informação-energia na interface clássico-quântica |
| Beneficiário: | Sérgio Ricardo Muniz |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |