Energy band structure of spin-1 condensates in optical lattices

doi:10.1088/1674-1056/19/10/100306

中国物理B ›› 2010, Vol. 19 ›› Issue (10): 100306-100306.doi: 10.1088/1674-1056/19/10/100306

Energy band structure of spin-1 condensates in optical lattices

李志, 张爱霞, 马娟, 薛具奎

College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China

收稿日期:2010-01-11 修回日期:2010-03-25 出版日期:2010-10-15 发布日期:2010-10-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10774120 and 10975114), the Natural Science Foundation of Gansu Province of China (Grant No. 3ZS051-A25-013), and the Natural Science Foundation of Northwest Normal University of China (Grant Nos. NWNU-KJCXGC-03-48 and NWNU-KJCXGC-03-17).

Energy band structure of spin-1 condensates in optical lattices

Li Zhi(李志), Zhang Ai-Xia(张爱霞), Ma Juan(马娟), and Xue Ju-Kui(薛具奎)^†

College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China

Received:2010-01-11 Revised:2010-03-25 Online:2010-10-15 Published:2010-10-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10774120 and 10975114), the Natural Science Foundation of Gansu Province of China (Grant No. 3ZS051-A25-013), and the Natural Science Foundation of Northwest Normal University of China (Grant Nos. NWNU-KJCXGC-03-48 and NWNU-KJCXGC-03-17).

摘要/Abstract

摘要： The energy band structure of spin-1 condensates with repulsive spin-independent and either ferromagnetic or antiferromagnetic spin-dependent interactions in one-dimensional (1D) periodic optical lattices is discussed. Within the two-mode approximation, Bloch bands of spin-1 condensates are presented. The results show that the Bloch bands exhibit a complex structure as the atom density of m_F=0 hyperfine state increases: bands splitting, reversion, intersection and loop structure are excited subsequently. The complex band structure should be related to the tunneling and spin-mixing dynamics.

Abstract: The energy band structure of spin-1 condensates with repulsive spin-independent and either ferromagnetic or antiferromagnetic spin-dependent interactions in one-dimensional (1D) periodic optical lattices is discussed. Within the two-mode approximation, Bloch bands of spin-1 condensates are presented. The results show that the Bloch bands exhibit a complex structure as the atom density of m_F=0 hyperfine state increases: bands splitting, reversion, intersection and loop structure are excited subsequently. The complex band structure should be related to the tunneling and spin-mixing dynamics.

Key words: spin-1 condensates, optical lattices, band structure

中图分类号: (Fine and hyperfine structure)

32.10.Fn

37.10.De (Atom cooling methods)

李志, 张爱霞, 马娟, 薛具奎. Energy band structure of spin-1 condensates in optical lattices[J]. 中国物理B, 2010, 19(10): 100306-100306.

Li Zhi(李志), Zhang Ai-Xia(张爱霞), Ma Juan(马娟), and Xue Ju-Kui(薛具奎). Energy band structure of spin-1 condensates in optical lattices[J]. Chin. Phys. B, 2010, 19(10): 100306-100306.

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Energy band structure of spin-1 condensates in optical lattices

Energy band structure of spin-1 condensates in optical lattices

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