Magnetic solitons in spinor Bose-Einstein condensates

ORAL

Abstract

Magnetic solitons, a novel type of vector soliton in spinor Bose-Einstein condensates (BECs), have drawn considerable attention recently, as their existence depends crucially on the antiferromagnetic spin-dependent contact interaction. Here we demonstrate that the SO(3) symmetry of the underlying spinor gas allows interactions of solitons with different spin polarization [1], and intriguing collisional properties are observed in numerical simulations, including rotation and dissipation of soliton spin polarization. Moreover, we extend the study of magnetic solitons to the ferromagnetic case [2]. Characteristics of magnetic solitons with ferromagnetic interaction are identified and a proposal for experimental generation is given. [1] Chai, X., Lao, D., Fujimoto, K., & Raman, C. (2021). Magnetic soliton: from two to three components with SO (3) symmetry. Physical Review Research, 3(1), L012003. [2] Chai, X., You, L., & Raman, C. (2020). Magnetic solitons in an immiscible two-component Bose-Einstein condensate. arXiv preprint arXiv:2011.11462.

*X.C., D.L., and C.R. acknowledge the support from the National Science Foundation through award no. 2011478. K.F. acknowledges the support from JSPS KAKENHI (Grants No. JP19H 01824, No. JP19K14628, No. 20H01843), the Program for Fostering Researchers for the Next Generation (IAR, Nagoya University), and Building of Consortia for the Development of Human Resources in Science and Technology (MEXT). L.Y. acknowledges the support from the National Key R&D Program of China (Grants No. 2018YFA0306504), and from the National Natural Science Foundation of China (NSFC) (No. 11654001, No. 91736311, No. 91836302, and No. U1930201).

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Publication: [1] Chai, X., Lao, D., Fujimoto, K., & Raman, C. (2021). Magnetic soliton: from two to three components with SO (3) symmetry. Physical Review Research, 3(1), L012003.
[2] Chai, X., You, L., & Raman, C. (2020). Magnetic solitons in an immiscible two-component Bose-Einstein condensate. arXiv preprint arXiv:2011.11462.

Presenters

  • XIAO CHAI

    • Georgia Institute of Technology

Authors

  • XIAO CHAI

    • Georgia Institute of Technology

  • Di Lao

    • Georgia Institute of Technology

  • Kazuya Fujimoto

    • Nagoya University

  • Li You

    • Tsinghua University
    • Department of Physics, Tsinghua University
    • Physics Department, Tsinghua University
    • State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University; Frontier Science Center for Quantum Information, Beijing 100084, China

  • Chandra Raman

    • Georgia Institute of Technology