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Phys. Rev. Lett. 103, 070404 (2009) [4 pages]

Stabilization of the p-Wave Superfluid State in an Optical Lattice

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Y.-J. Han1, Y.-H. Chan1, W. Yi2, A. J. Daley2, S. Diehl2, P. Zoller2, and L.-M. Duan1
1Department of Physics and MCTP, University of Michigan, Ann Arbor, Michigan 48109, USA
2Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, Austria and Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria

Received 20 May 2009; revised 17 July 2009; published 14 August 2009

It is hard to stabilize the p-wave superfluid state of cold atomic gas in free space due to inelastic collisional losses. We consider the p-wave Feshbach resonance in an optical lattice, and show that it is possible to have a stable p-wave superfluid state where the multiatom collisional loss is suppressed through the quantum Zeno effect. We derive the effective Hamiltonian for this system, and calculate its phase diagram in a one-dimensional optical lattice. The results show rich phase transitions between the p-wave superfluid state and different types of insulator states induced either by interaction or by dissipation.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.070404
DOI:
10.1103/PhysRevLett.103.070404
PACS:
05.30.Fk, 03.75.Ss, 34.50.−s