Ultracold dipolar bosons trapped in atomtronic circuits
arxiv(2024)
摘要
We consider a ring-shaped triple-well potential with few polar bosons with
in-plane dipole orientation. By diagonalizing the extended Bose-Hubbard
Hamiltonian, we investigate the ground state properties of the system as we
rotate the dipole angle and vary the on-site and dipole-dipole interaction
strengths. We find that the anisotropic character of the dipolar interactions,
as well as the competition between dipole and on-site interactions lead to
different ground states and that the entanglement between sites also depends on
the number of particles. We further characterize the system by studying the
condensed fraction and coherence properties, highlighting the possible effect
of the dipolar interaction as manipulation tool.
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