Two-component dipolar Bose-Einstein condensate in concentrically coupled annular traps

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作者：
Xiao-Fei Zhang
Wei Han
Lin Wen
Peng Zhang
Rui-Fang Dong
Hong Chang
Shou-Gang Zhang
机构：
[1] Chinese Academy of Sciences,Key Laboratory of Time and Frequency Primary Standards, National Time Service Center
[2] Institute of Physics,Beijing National Laboratory for Condensed Matter Physics
[3] Chinese Academy of Sciences,College of Physics and Electronic Engineering
[4] Chongqing Normal University,School of Electronics Engineering and Computer Science
[5] Peking University,undefined
来源：
Scientific Reports | / 5卷
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摘要：
Dipolar Bosonic atoms confined in external potentials open up new avenues for quantum-state manipulation and will contribute to the design and exploration of novel functional materials. Here we investigate the ground-state and rotational properties of a rotating two-component dipolar Bose-Einstein condensate, which consists of both dipolar bosonic atoms with magnetic dipole moments aligned vertically to the condensate and one without dipole moments, confined in concentrically coupled annular traps. For the nonrotational case, it is found that the tunable dipolar interaction can be used to control the location of each component between the inner and outer rings and to induce the desired ground-state phase. Under finite rotation, it is shown that there exists a critical value of rotational frequency for the nondipolar case, above which vortex state can form at the trap center and the related vortex structures depend strongly on the rotational frequency. For the dipolar case, it is found that various ground-state phases and the related vortex structures, such as polygonal vortex clusters and vortex necklaces, can be obtained via a proper choice of the dipolar interaction and rotational frequency. Finally, we also study and discuss the formation process of such vortex structures.
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  • [1] Dalfovo F(1999)Theory of Bose-Einstein condensation in trapped gases Rev. Mod. Phys. 71 463-undefined
  • [2] Giorgini S(2005)Bose-Einstein condensation of Chromium Phys. Rev. Lett. 94 160401-undefined
  • [3] Pitaevskii LP(2005)Observation of dipole-dipole interaction in a degenerate duantum gas Phys. Rev. Lett. 95 150406-undefined
  • [4] Stringari S(2007)Strong dipolar effects in a quantum ferrofluid Nature (London) 448 672-undefined
  • [5] Griesmaier A(2008)Stabilization of a purely dipolar quantum gas against collapse Nat. Phys. 4 218-undefined
  • [6] Werner J(2006)Laser cooling without repumping: A magneto-optical trap for Erbium atoms Phys. Rev. Lett. 96 143005-undefined
  • [7] Hensler S(2012)Bose-Einstein condensation of Erbium Phys. Rev. Lett. 108 210401-undefined
  • [8] Stuhler J(2010)Trapping ultracold Dysprosium: A highly magnetic gas for dipolar physics Phys. Rev. Lett. 104 063001-undefined
  • [9] Pfau T(2011)Strongly dipolar Bose-Einstein condensate of Dysprosium Phys. Rev. Lett. 107 190401-undefined
  • [10] Stuhler J(2008)Manifestations of the roton mode in dipolar Bose-Einstein condensates Phys. Rev. Lett. 100 245302-undefined
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