Segregated quantum phases of dipolar bosonic mixtures in two-dimensional optical lattices
Abstract
We identify the quantum phases in a binary mixture of dipolar bosons in two-dimensional optical lattices. Our study is motivated by the recent experimental realization of binary dipolar condensate mixtures of Er-Dy [Phys. Rev. Lett. 121, 213601 (2018)]. We model the system by using the extended two-species Bose-Hubbard model and calculate the ground-state phase diagrams by using mean-field theory. For selected cases we also obtain analytical phase boundaries by using the site-decoupled mean-field theory. For comparison we also examine the phase diagram of two-species Bose-Hubbard model. Our results show that the quantum phases with the long-range intraspecies interaction phase separate with no phase ordering. The introduction of the long-range interspecies interaction modifies the quantum phases of the system. It leads to the emergence of phase-separated quantum phases with phase ordering. The transition from the phase-separated quantum phases without phase ordering to phase ordered ones breaks the inversion symmetry.
Keywords
Cite
@article{arxiv.2004.06400,
title = {Segregated quantum phases of dipolar bosonic mixtures in two-dimensional optical lattices},
author = {Rukmani Bai and Deepak Gaur and Hrushikesh Sable and Soumik Bandyopadhyay and K. Suthar and D. Angom},
journal= {arXiv preprint arXiv:2004.06400},
year = {2020}
}
Comments
16 pages, 6 figures, Published in the October issue of Phys. Rev. A