Quantum crystals in a trapped Rydberg-dressed Bose-Einstein condensate

C. H. Hsueh, T. C. Lin, T. L. Horng, W. C. Wu

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Based on a mean-field approach, spontaneously crystalline ground states, called quantum crystals, of a trapped Rydberg-dressed Bose-Einstein condensate are numerically investigated. In a quasi-two-dimensional geometry, a hexagonal lattice of condensate droplets manifests when dressed coupling is above a critical value. The onset of the crystallized state is characterized by a drastic drop of the nonclassical rotational inertia fraction (NCRIF). Nevertheless, the NCRIF remains a large value for a large span of dressed coupling, which indicates that the long-range phase coherence of a superfluid is preserved in the crystallized state. By relaxing the confinement against the two-dimensional geometry and by introducing an anisotropic interaction, an AB stacking bilayer lattice and a nearly square lattice, respectively, are also available in the system. A quasi-one-dimensional lattice is also shown.

Original languageEnglish
Article number013619
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume86
Issue number1
DOIs
Publication statusPublished - 2012 Jul 16

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Bose-Einstein condensates
inertia
crystals
phase coherence
geometry
condensates
ground state
interactions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Quantum crystals in a trapped Rydberg-dressed Bose-Einstein condensate. / Hsueh, C. H.; Lin, T. C.; Horng, T. L.; Wu, W. C.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 86, No. 1, 013619, 16.07.2012.

Research output: Contribution to journalArticle

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