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Ultracold dipolar bosons trapped in atomtronic circuits
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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, leads 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 for different polarization angles, highlighting the possible effect of the dipolar interaction as a manipulation tool.
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ROVIROLA METCALFE, Marc, et al. Ultracold dipolar bosons trapped in atomtronic circuits. Physical Review A. 2024. Vol. 109, num. 1-8. ISSN 2469-9926. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/220584