arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1107.4522cond-mat.mes-hallcond-mat.quant-gas
收藏

二元极化激元超流体中的无扰流动

Frictionless flow in a binary polariton superfluid

E. Cancellieri, F. M. Marchetti, M. H. Szymanska, D. Sanvitto, C. Tejedor

摘要:

研究了双激光相干注入二元微腔极化激元超流体的性质。交叉从超音速到亚音速的制度,其中运动是无摩擦的,通过评估Bogoliubov频谱。我们表明,根据朗道准则,两个组件之间的耦合排除了超流性的存在,只是一个组件,而不是为其他。通过分析施加在缺陷上的阻力,我们给出了一个实验解决从超音速到亚音速区域的交叉的配方。

英文摘要:

We study the properties of a binary microcavity polariton superfluid coherently injected by two lasers. The crossover from the supersonic to subsonic regime, where motion is frictionless, is described by evaluating the Bogoliubov spectra. We show that according to the Landau criteria, the coupling between the two components precludes the existence of superfluidity just for one component but not for the other. By analysing the drag force exerted on a defect, we give a recipe to experimentally address the crossover from the supersonic to the subsonic regime.

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。

↑