Two-component Bose-Hubbard model with higher-angular-momentum states

Bose-Hubbard Hamiltonian of cold two-component Bose gas of spinor chromium atoms is studied. Dipolar interactions of magnetic moments while tuned resonantly by an ultralow magnetic field can lead to a transfer of atoms from the ground to excited Wannier states with a nonvanishing angular orbital mom...

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Bibliographic Details
Published in:Physical Review A
Main Authors: Pietraszewicz, Joanna, Sowiński, Tomasz, Brewczyk, Mirosław, Zakrzewski, Jakub, Lewenstein, Maciej, Gajda, Mariusz
Format: Article in Journal/Newspaper
Language:English
Published: 2012
Subjects:
IPY
Online Access:http://ruj.uj.edu.pl/xmlui/handle/item/2606
https://doi.org/10.1103/PhysRevA.85.053638
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Summary:Bose-Hubbard Hamiltonian of cold two-component Bose gas of spinor chromium atoms is studied. Dipolar interactions of magnetic moments while tuned resonantly by an ultralow magnetic field can lead to a transfer of atoms from the ground to excited Wannier states with a nonvanishing angular orbital momentum. Hence we propose the way of creating Px+iPy orbital superfluid. The spin introduces an additional degree of control and leads to a variety of different stable phases of the system. The Mott insulator of atoms in a superposition of the ground and vortex Wannier states as well as a superposition of the Mott insulator with orbital superfluid are predicted.

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