Quantum droplets of bosonic mixtures in a one-dimensional optical lattice
We demonstrate the existence of quantum droplets in two-component one-dimensional Bose-Hubbard chains. The droplets exist for any strength of repulsive intraspecies interactions provided they are balanced by comparable attractive interspecies interactions. The ground-state phase diagram is presented...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-04-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.022008 |
| _version_ | 1827286180683579392 |
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| author | Ivan Morera Grigori E. Astrakharchik Artur Polls Bruno Juliá-Díaz |
| author_facet | Ivan Morera Grigori E. Astrakharchik Artur Polls Bruno Juliá-Díaz |
| author_sort | Ivan Morera |
| collection | DOAJ |
| description | We demonstrate the existence of quantum droplets in two-component one-dimensional Bose-Hubbard chains. The droplets exist for any strength of repulsive intraspecies interactions provided they are balanced by comparable attractive interspecies interactions. The ground-state phase diagram is presented and the different phases are characterized by examining the density profile and off-diagonal one- and two-body correlation functions. A rich variety of phases is found, including atomic superfluid gases, atomic superfluid droplets, pair superfluid droplets, pair superfluid gases, and a Mott-insulator phase. A parameter region prone to be experimentally explored is identified, where the average population per site is lower than three atoms, thus avoiding three-body losses. Finally, the bipartite entanglement of the droplets is found to have a nontrivial dependence on the number of particles. |
| first_indexed | 2024-04-24T10:27:05Z |
| format | Article |
| id | doaj.art-765a1fd1794f4780825dc21de9ac3d8b |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:27:05Z |
| publishDate | 2020-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-765a1fd1794f4780825dc21de9ac3d8b2024-04-12T16:52:27ZengAmerican Physical SocietyPhysical Review Research2643-15642020-04-012202200810.1103/PhysRevResearch.2.022008Quantum droplets of bosonic mixtures in a one-dimensional optical latticeIvan MoreraGrigori E. AstrakharchikArtur PollsBruno Juliá-DíazWe demonstrate the existence of quantum droplets in two-component one-dimensional Bose-Hubbard chains. The droplets exist for any strength of repulsive intraspecies interactions provided they are balanced by comparable attractive interspecies interactions. The ground-state phase diagram is presented and the different phases are characterized by examining the density profile and off-diagonal one- and two-body correlation functions. A rich variety of phases is found, including atomic superfluid gases, atomic superfluid droplets, pair superfluid droplets, pair superfluid gases, and a Mott-insulator phase. A parameter region prone to be experimentally explored is identified, where the average population per site is lower than three atoms, thus avoiding three-body losses. Finally, the bipartite entanglement of the droplets is found to have a nontrivial dependence on the number of particles.http://doi.org/10.1103/PhysRevResearch.2.022008 |
| spellingShingle | Ivan Morera Grigori E. Astrakharchik Artur Polls Bruno Juliá-Díaz Quantum droplets of bosonic mixtures in a one-dimensional optical lattice Physical Review Research |
| title | Quantum droplets of bosonic mixtures in a one-dimensional optical lattice |
| title_full | Quantum droplets of bosonic mixtures in a one-dimensional optical lattice |
| title_fullStr | Quantum droplets of bosonic mixtures in a one-dimensional optical lattice |
| title_full_unstemmed | Quantum droplets of bosonic mixtures in a one-dimensional optical lattice |
| title_short | Quantum droplets of bosonic mixtures in a one-dimensional optical lattice |
| title_sort | quantum droplets of bosonic mixtures in a one dimensional optical lattice |
| url | http://doi.org/10.1103/PhysRevResearch.2.022008 |
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