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Phys. Rev. Lett. 98, 060404 (2007) [4 pages]

Strongly Correlated 2D Quantum Phases with Cold Polar Molecules: Controlling the Shape of the Interaction Potential

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H. P. Büchler1,2, E. Demler3, M. Lukin3, A. Micheli1,2, N. Prokof’ev4, G. Pupillo1,2, and P. Zoller1,2
1Institute for Theoretical Physics, University of Innsbruck, 6020 Innsbruck, Austria
2Institute for Quantum Optics and Quantum Information, 6020 Innsbruck, Austria
3Department of Physics, Harvard University, Cambridge, Massachusetts, USA
4BEC-INFM, Dipartimento di Fisica, Università di Trento, I-38050 Povo, Italy

Received 11 July 2006; published 8 February 2007

We discuss techniques to tune and shape the long-range part of the interaction potentials in quantum gases of bosonic polar molecules by dressing rotational excitations with static and microwave fields. This provides a novel tool towards engineering strongly correlated quantum phases in combination with low-dimensional trapping geometries. As an illustration, we discuss the 2D superfluid-crystal quantum phase transition for polar molecules interacting via an electric-field-induced dipole-dipole potential.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.060404
DOI:
10.1103/PhysRevLett.98.060404
PACS:
05.30.−d, 03.75.Hh, 34.20.Cf

See Also

See Also: G. E. Astrakharchik, J. Boronat, I. L. Kurbakov, and Yu. E. Lozovik, Quantum Phase Transition in a Two-Dimensional System of Dipoles, Phys. Rev. Lett. 98, 060405 (2007).