arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1707.07910cond-mat.quant-gasquant-ph
收藏

环中极化激元持续电流的相互作用增强流

Interaction-enhanced flow of a polariton persistent current in a ring

A. Gallemí, M. Guilleumas, M. Richard, A. Minguzzi

摘要:

研究了环形几何中激子-极化激元循环流动的量子流体力学性质。我们考虑一个共振激发方案,其中旋量极化激元流体设置为运动的两个组件的自旋到轨道角动量转换。我们表明,该方案允许控制流体的缠绕数,并创建两个循环状态不同的两个单位的角动量。然后,我们考虑的无序势,这是总是存在于现实的纳米结构的效果。我们表明,一个顺利的障碍是有效地筛选极化激元-极化激元相互作用,产生极化激元超流性的签名。这种效应让人联想到超导回路中的超电流。

英文摘要:

We study the quantum hydrodynamical features of exciton-polaritons flowing circularly in a ring-shaped geometry. We consider a resonant-excitation scheme in which the spinor polariton fluid is set into motion in both components by spin-to-orbital angular momentum conversion. We show that this scheme allows to control the winding number of the fluid, and to create two circulating states differing by two units of the angular momentum. We then consider the effect of a disorder potential, which is always present in realistic nanostructures. We show that a smooth disorder is efficiently screened by the polariton-polariton interactions, yielding a signature of polariton superfluidity. This effect is reminiscent of supercurrent in a superconducting loop.

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。

↑