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Title: Quantum droplets of bosonic mixtures in a one-dimensional optical lattice
Author: Morera, Iván
Astrakharchik, Grigori
Polls Martí, Artur
Juliá-Díaz, Bruno
Keywords: Física de partícules
Particle physics
Issue Date: 9-Apr-2020
Publisher: American Physical Society
Abstract: 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.
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It is part of: Physical Review Research, 2020, vol. 2, num. 2
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ISSN: 2643-1564
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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