Ground states of 2D tilted dipolar bosons with density-induced hopping

Abstract

Motivated by recent experiments with ultracold magnetic atoms trapped in optical lattices where the orientation of atomic dipoles can be fully controlled by external fields, we study the ground state properties of dipolar bosons trapped in a two-dimensional lattice with density-induced hopping and where the dipoles are tilted along the $xz$ plane. We present ground state phase diagrams of the above system at different tilt angles. We find that, as the dipolar interaction increases, the superfluid phase at half filling factor is destroyed in favor of either a checkerboard or stripe solid phase for tilt angle $\theta \lesssim 35.3^{\circ }$ or $\theta \gtrsim 35.3^{\circ }$ respectively. More interesting physics happens at tilt angles $\theta \gtrsim 58^{\circ }$, where we find that, as the dipolar interaction strength increases, solid phases first appear at filling factor lower than $0.5$. Moreover, unlike what observed at lower tilt angles, we find that, at half filling, a stripe supersolid intervenes between the superfluid and stripe solid phase.

9 pages

References in corpus (19)

• Many-Body Physics with Ultracold Gases
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Probing many-body dynamics on a 51-atom quantum simulator
• Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
• Bose-Einstein condensation of chromium
• Quantum Simulation of Antiferromagnetic Spin Chains in an Optical Lattice
• Bose-Einstein Condensation of Erbium
• Quantum degenerate dipolar Fermi gas
• Non-standard Hubbard models in optical lattices: a review
• Dynamical crystallization in a low-dimensional Rydberg gas
• Role of interactions in 87Rb-40K Bose-Fermi mixtures in a 3d optical lattice
• Production of trilobite Rydberg molecule dimers with thousand-Debye permanent electric dipole moments
• Bose-glass phases of ultracold atoms due to cavity backaction
• Modeling the adiabatic creation of ultracold, polar ${}^{23}\mathrm{N}{\mathrm{a}}^{40}\mathrm{K}$ molecules
• Spontaneous inhomogeneous phases in ultracold dipolar Fermi gases
• A chromium dipolar Fermi sea
• Lattice bosons with infinite range checkerboard interactions
• Density wave instabilities of tilted fermionic dipoles in a multilayer geometry
• Equilibrium phases of dipolar lattice bosons in the presence of random diagonal disorder

Cited by in corpus (8)

• Recent progress on quantum simulations of non-standard Bose-Hubbard models
• Supersolid phases of lattice dipoles tilted in three-dimensions
• Bond order via cavity-mediated interactions
• Field-induced Bose-Einstein condensation and supersolid in the two-dimensional Kondo necklace
• Quantum phases of lattice dipolar bosons coupled to a high-finesse cavity
• Dipolar Bose-Hubbard Model in finite-size real-space cylindrical lattices
• Emergent Mott-insulators at non-integer fillings and devil's staircase induced by attractive interaction in many-body polarons
• Programmable order by disorder effect and underlying phases through dipolar quantum simulators