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

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

研究成果: 雜誌貢獻期刊論文同行評審

20 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
文章編號013619
期刊Physical Review A - Atomic, Molecular, and Optical Physics
86
發行號1
DOIs
出版狀態已發佈 - 2012 七月 16

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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