Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.155301
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Funding
- NSF [PHY-1205504]
- NIST [60NANB12D244]
- Landesexzellenzinitiative Hamburg
- Science and Research Foundation Hamburg
- Joachim Herz Stiftung
- Deutsche Forschungsgemeinschaft [SFB 925]
- NSF
- National Science Foundation
- Air Force Office of Scientific Research
- Direct For Mathematical & Physical Scien
- Division Of Physics [1205504, 1125846] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [0970055] Funding Source: National Science Foundation
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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. DOI: 10.1103/PhysRevLett.110.155301
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