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arXiv 2007.06171cond-mat.quant-gasnlin.PS
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自旋-轨道耦合玻色-爱因斯坦凝聚体中亮孤子和其它局域态的猝灭动力学

Quenching dynamics of the bright solitons and other localized states in spin-orbit coupled Bose-Einstein condensates

Rajamanickam Ravisankar, Thangarasu Sriraman, Luca Salasnich, Paulsamy Muruganandam

摘要:

研究了准一维条件下碱金属超冷原子和稀碱金属原子组成的二元玻色-爱因斯坦凝聚体的动力学。数值求解两个耦合的Gross-Pitaevskii方程,准确地描述了系统的动力学,我们证明了自旋输运可以控制适当的淬火自旋轨道(SO)和拉比耦合强度。此外,我们预测了各种动力学特性引起的淬火:破碎的振荡,呼吸器样的振荡模式,自旋混合-分离,不混溶的过渡,新兴的暗亮态,暗孤子,和自旋捕获动力学。我们还概述了本研究在操纵$^{39}$ K凝聚的自旋态的实验相关性。

英文摘要:

We study the dynamics of binary Bose-Einstein condensates made of ultracold and dilute alkali-metal atoms in a quasi-one-dimensional setting. Numerically solving the two coupled Gross-Pitaevskii equations which accurately describe the system dynamics, we demonstrate that the spin transport can be controlled by suitably quenching spin-orbit (SO) and Rabi coupling strengths. Moreover, we predict a variety of dynamical features induced by quenching: broken oscillations, breathers-like oscillating patterns, spin-mixing-demixing, miscible-immiscible transition, emerging dark-bright states, dark solitons, and spin-trapping dynamics. We also outline the experimental relevance of the present study in manipulating the spin states in $^{39}$K condensates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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