arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.08443cond-mat.mes-hallcond-mat.quant-gas
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塞曼晶格中的极化子带隙和带隙条纹孤子

Polariton gap and gap-stripe solitons in Zeeman lattices

Dmitry A. Zezyulin Yaroslav V. Kartashov, Ivan A. Shelykh

摘要:

我们预测,导致塞曼晶格形成的空间调制塞曼分裂可用于在具有主导排斥相互作用的旋量极化子凝聚中产生局域自维持激发。在这种晶格中,TE-TM分裂现象起着有效的自旋-轨道相互作用的作用,导致条纹相的出现和具有复杂内禀结构的稳定的带隙条纹孤子的形成,这是由于存在两个特征空间尺度,其中一个由塞曼晶格的周期决定,另一个由布里渊区深度的动量决定,在该点处,这样的孤子从线性光谱分叉。适当的共振泵浦可以激发出带隙极化激元孤子。

英文摘要:

We predict that spatially modulated Zeeman splitting resulting in the formation of Zeeman lattice can be used for creation of localized self-sustained excitations in spinor polariton condensates with dominant repulsive interactions. In such lattices, the phenomenon of TE-TM splitting, playing the role of effective spin-orbit interaction, leads to the emergence of the stripe phase and formation of stable gap-stripe solitons with complex intrinsic structure resulting from the presence of two characteristic spatial scales, one of which is set by the period of Zeeman lattice, while other is set by the momentum in the depth of the Brillouin zone, at which such solitons bifurcate from the linear spectrum. Gap-stripe polariton solitons can be excited by suitable resonant pump.

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