Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/128464
Quantum properties of a binary bosonic mixture in a double well
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
This work contains a detailed analysis of the properties of the ground state of a two-component two-site Bose-Hubbard model, which captures the physics of a binary mixture of Bose-Einstein condensates trapped in a double-well potential. The atom-atom interactions within each species and among the two species are taken as variable parameters, while the hopping terms are kept fixed. To characterize the ground state, we use observables such as the imbalance of population and its quantum uncertainty. The quantum many-body correlations present in the system are further quantified by studying the degree of condensation of each species, the entanglement between the two sites, and the entanglement between the two species. The latter is measured by means of the Schmidt gap, the von Neumann entropy, or the purity obtained after tracing out a part of the system. A number of relevant states are identified, e.g., Schrödinger catlike many-body states, in which the outcome of the population imbalance of both components is completely correlated, and other states with even larger von Neumann entropy which have a large spread in Fock space.
Matèries
Matèries (anglès)
Citació
Citació
MUJAL TORREBLANCA, Pere, JULIÁ-DÍAZ, Bruno, POLLS MARTÍ, Artur. Quantum properties of a binary bosonic mixture in a double well. _Physical Review A_. 2016. Vol. 93, núm. 4, pàgs. 043619-1-043619-11. [consulta: 24 de gener de 2026]. ISSN: 2469-9926. [Disponible a: https://hdl.handle.net/2445/128464]