Phase diagram of mixtures of species in hexagonal optical lattices
Theoretical analysis for the fragmentation of an atomic superfluid under oscilator...
| Full text | |
| Author(s): |
Donato, Mario H. Figlioli
;
Muniz, Sergio R.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | SYMMETRY-BASEL; v. 14, n. 5, p. 12-pg., 2022-05-01. |
| Abstract | |
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) | |
| FAPESP's process: | 13/07276-1 - CEPOF - Optics and Photonic Research Center |
| Grantee: | Vanderlei Salvador Bagnato |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 19/27471-0 - Development of new experimental platforms for the study of nanothermodynamics and the information-energy relation in the quantum-classic boundary |
| Grantee: | Sérgio Ricardo Muniz |
| Support Opportunities: | Regular Research Grants |