Quantum Phases of Quadrupolar Fermi Gases in Optical Lattices

S. G. Bhongale, L. Mathey, Erhai Zhao, S. F. Yelin, and Mikhail Lemeshko
Phys. Rev. Lett. 110, 155301 – Published 8 April 2013; Erratum Phys. Rev. Lett. 111, 239901 (2013)
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We introduce a new platform for quantum simulation of many-body systems based on nonspherical atoms or molecules with zero dipole moments but possessing a significant value of electric quadrupole moments. We consider a quadrupolar Fermi gas trapped in a 2D square optical lattice, and show that the peculiar symmetry and broad tunability of the quadrupole-quadrupole interaction results in a rich phase diagram encompassing unconventional BCS and charge density wave phases, and opens up a perspective to create a topological superfluid. Quadrupolar species, such as metastable alkaline-earth atoms and homonuclear molecules, are stable against chemical reactions and collapse and are readily available in experiment at high densities.

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  • Received 20 November 2012


© 2013 American Physical Society


Erratum: Quantum Phases of Quadrupolar Fermi Gases in Optical Lattices [Phys. Rev. Lett. 110, 155301 (2013)]

S. G. Bhongale, L. Mathey, Erhai Zhao, S. F. Yelin, and Mikhail Lemeshko
Phys. Rev. Lett. 111, 239901 (2013)

Authors & Affiliations

S. G. Bhongale1, L. Mathey2, Erhai Zhao1, S. F. Yelin3,4,5, and Mikhail Lemeshko4,5,*

  • 1School of Physics, Astronomy, and Computational Sciences, George Mason University, Fairfax, Virginia 22030, USA
  • 2Zentrum für Optische Quantentechnologien and Institut für Laserphysik, Universität Hamburg, 22761 Hamburg, Germany
  • 3Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
  • 4ITAMP, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
  • 5Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA

  • *mlemeshko@cfa.harvard.edu

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Vol. 110, Iss. 15 — 12 April 2013

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