Dipoles on a Two-leg Ladder

Abstract

We study polar molecules with long-range dipole-dipole interactions confined to move on a two-leg ladder for different orientations of the molecular dipole moments with respect to the ladder. Matrix product states are employed to calculate the many-body ground state of the system as function of lattice filling fractions, perpendicular hopping between the legs, and dipole interaction strength. We show that the system exhibits zig-zag ordering when the dipolar interactions are predominantly repulsive. As a function of dipole moment orientation with respect to the ladder, we find that there is a critical angle at which ordering disappears. This angle is slightly larger than the angle at which the dipoles are non-interacting along a single leg. This behavior should be observable using current experimental techniques.

10 pages, 10 figures, published version

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Cited by in corpus (6)

• Emergent supersymmetry at the Ising-Berezinskii-Kosterlitz-Thouless multicritical point
• Extended Bose-Hubbard Model with dipolar and contact interactions
• Bloch dynamics in lattices with long range hoppings
• Formation of classical crystals of dipolar particles in a helical geometry
• String order in dipole-blockaded quantum liquids
• Topological floating phase of dipolar bosons in an optical ladder