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APS » Journals » Phys. Rev. Lett. » Volume 94 » Issue 7
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Phys. Rev. Lett. 94, 070404 (2005) [4 pages]

Fractional Quantum Hall States in Ultracold Rapidly Rotating Dipolar Fermi Gases

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M. A. Baranov1,2,3, Klaus Osterloh1, and M. Lewenstein1
1Institute for Theoretical Physics, University of Hannover, Appelstrasse 2, 30167 Hannover, Germany
2RRC “Kurchatov Institute,” Kurchatov Square 1, 123182 Moscow, Russia
3Van der Waals–Zeeman Institute, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands

Received 28 April 2004; published 24 February 2005

We demonstrate the experimental feasibility of incompressible fractional quantum Hall-like states in ultracold two-dimensional rapidly rotating dipolar Fermi gases. In particular, we argue that the state of the system at filling fraction ν=1/3 is well described by the Laughlin wave function and find a substantial energy gap in the quasiparticle excitation spectrum. Dipolar gases, therefore, appear as natural candidates of systems that allow us to realize these very interesting highly correlated states in future experiments.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.070404
DOI:
10.1103/PhysRevLett.94.070404
PACS:
03.75.Ss, 73.43.–f
 
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