Persistent currents in Bose–Bose mixtures after an interspecies interaction quench
We study the persistent currents and interspecies entanglement generation in a Bose–Bose mixture formed by two atomic gases (hereafter labeled by the letters A and B) trapped in a one-dimensional ring lattice potential with an artificial gauge field after a sudden quench from zero to strong interact...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2021-01-01
|
| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/abeebb |
| _version_ | 1797750238488821760 |
|---|---|
| author | D Spehner L Morales-Molina S A Reyes |
| author_facet | D Spehner L Morales-Molina S A Reyes |
| author_sort | D Spehner |
| collection | DOAJ |
| description | We study the persistent currents and interspecies entanglement generation in a Bose–Bose mixture formed by two atomic gases (hereafter labeled by the letters A and B) trapped in a one-dimensional ring lattice potential with an artificial gauge field after a sudden quench from zero to strong interactions between the two gases. Assuming that the strength of these interactions is much larger than the single species energies and that the gas A is initially in the Mott-insulator regime, we show that the current of the gas B is reduced with respect to its value prior the interaction quench. Averaging fast oscillations out, the relative decrease of this current is independent of the initial visibility and Peierls phase of the gas B and behaves quadratically with the visibility of the gas A. The second Rényi entropy of the reduced state measuring the amount of entanglement between the two gases is found to scale linearly with the number of sites and to be proportional to the relative decrease of the current. |
| first_indexed | 2024-03-12T16:29:44Z |
| format | Article |
| id | doaj.art-be028d08fb294451bb96085707713302 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:29:44Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-be028d08fb294451bb960857077133022023-08-08T15:34:01ZengIOP PublishingNew Journal of Physics1367-26302021-01-0123606302510.1088/1367-2630/abeebbPersistent currents in Bose–Bose mixtures after an interspecies interaction quenchD Spehner0https://orcid.org/0000-0002-0403-924XL Morales-Molina1S A Reyes2Departamento de Ingeniería Matemática, Universidad de Concepción , Concepción, Chile; Univ. Grenoble Alpes , CNRS, Institut Fourier and LPMMC, F-38000 Grenoble, FranceFacultad de Física, Pontificia Universidad Católica de Chile , Casilla 306, Santiago, ChileFacultad de Física, Pontificia Universidad Católica de Chile , Casilla 306, Santiago, ChileWe study the persistent currents and interspecies entanglement generation in a Bose–Bose mixture formed by two atomic gases (hereafter labeled by the letters A and B) trapped in a one-dimensional ring lattice potential with an artificial gauge field after a sudden quench from zero to strong interactions between the two gases. Assuming that the strength of these interactions is much larger than the single species energies and that the gas A is initially in the Mott-insulator regime, we show that the current of the gas B is reduced with respect to its value prior the interaction quench. Averaging fast oscillations out, the relative decrease of this current is independent of the initial visibility and Peierls phase of the gas B and behaves quadratically with the visibility of the gas A. The second Rényi entropy of the reduced state measuring the amount of entanglement between the two gases is found to scale linearly with the number of sites and to be proportional to the relative decrease of the current.https://doi.org/10.1088/1367-2630/abeebbcold atomic gases in ring latticespersistent currentsentanglementmulti-component Bose gases |
| spellingShingle | D Spehner L Morales-Molina S A Reyes Persistent currents in Bose–Bose mixtures after an interspecies interaction quench New Journal of Physics cold atomic gases in ring lattices persistent currents entanglement multi-component Bose gases |
| title | Persistent currents in Bose–Bose mixtures after an interspecies interaction quench |
| title_full | Persistent currents in Bose–Bose mixtures after an interspecies interaction quench |
| title_fullStr | Persistent currents in Bose–Bose mixtures after an interspecies interaction quench |
| title_full_unstemmed | Persistent currents in Bose–Bose mixtures after an interspecies interaction quench |
| title_short | Persistent currents in Bose–Bose mixtures after an interspecies interaction quench |
| title_sort | persistent currents in bose bose mixtures after an interspecies interaction quench |
| topic | cold atomic gases in ring lattices persistent currents entanglement multi-component Bose gases |
| url | https://doi.org/10.1088/1367-2630/abeebb |
| work_keys_str_mv | AT dspehner persistentcurrentsinbosebosemixturesafteraninterspeciesinteractionquench AT lmoralesmolina persistentcurrentsinbosebosemixturesafteraninterspeciesinteractionquench AT sareyes persistentcurrentsinbosebosemixturesafteraninterspeciesinteractionquench |