Superexchange-mediated magnetization dynamics with ultracold alkaline-earth atoms in an optical lattice

doi:10.1088/1674-1056/26/4/046702

中国物理B ›› 2017, Vol. 26 ›› Issue (4): 46702-046702.doi: 10.1088/1674-1056/26/4/046702

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Superexchange-mediated magnetization dynamics with ultracold alkaline-earth atoms in an optical lattice

Shaobing Zhu(朱少兵), Jun Qian(钱军), Yuzhu Wang(王育竹)

1 Key Laboratory for Quantum Optics and Center for Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2016-12-06 修回日期:2017-01-24 出版日期:2017-04-05 发布日期:2017-04-05
通讯作者: Yuzhu Wang E-mail:yzwang@mail.shcnc.ac.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0301504).

Superexchange-mediated magnetization dynamics with ultracold alkaline-earth atoms in an optical lattice

Shaobing Zhu(朱少兵)^1,2, Jun Qian(钱军)¹, Yuzhu Wang(王育竹)¹

1 Key Laboratory for Quantum Optics and Center for Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2016-12-06 Revised:2017-01-24 Online:2017-04-05 Published:2017-04-05
Contact: Yuzhu Wang E-mail:yzwang@mail.shcnc.ac.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0301504).

摘要/Abstract

摘要：

Superexchange and inter-orbital spin-exchange interactions are key ingredients for understanding (orbital) quantum magnetism in strongly correlated systems and have been realized in ultracold atomic gases. Here we study the spin dynamics of ultracold alkaline-earth atoms in an optical lattice when the two exchange interactions coexist. In the superexchange interaction dominating regime, we find that the time-resolved spin imbalance shows a remarkable modulated oscillation, which can be attributed to the interplay between local and nonlocal quantum mechanical exchange mechanisms. Moreover, the filling of the long-lived excited atoms affects the collapse and revival of the magnetization dynamics. These observations can be realized in state-dependent optical lattices combined with the state-of-the-art advances in optical lattice clock spectroscopy.

关键词: alkaline-earth atoms, spin dynamics, spin-exchange, superexchange

Abstract:

Key words: alkaline-earth atoms, spin dynamics, spin-exchange, superexchange

中图分类号: (Degenerate Fermi gases)

67.85.Lm

34.50.Cx (Elastic; ultracold collisions) 75.10.Jm (Quantized spin models, including quantum spin frustration)

朱少兵, 钱军, 王育竹. Superexchange-mediated magnetization dynamics with ultracold alkaline-earth atoms in an optical lattice[J]. 中国物理B, 2017, 26(4): 46702-046702.

Shaobing Zhu(朱少兵), Jun Qian(钱军), Yuzhu Wang(王育竹). Superexchange-mediated magnetization dynamics with ultracold alkaline-earth atoms in an optical lattice[J]. Chin. Phys. B, 2017, 26(4): 46702-046702.

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Superexchange-mediated magnetization dynamics with ultracold alkaline-earth atoms in an optical lattice

Superexchange-mediated magnetization dynamics with ultracold alkaline-earth atoms in an optical lattice

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