Carusotto Iacopo, Ciuti Cristiano
Laboratoire Kastler Brossel, Ecole Normale Supérieure, 24 rue Lhomond, 75005 Paris, France.
Phys Rev Lett. 2004 Oct 15;93(16):166401. doi: 10.1103/PhysRevLett.93.166401. Epub 2004 Oct 13.
We study the motion of a polariton fluid injected into a planar microcavity by a continuous wave laser. In the presence of static defects, the spectrum of the Bogoliubov-like excitations reflects onto the shape and intensity of the resonant Rayleigh scattering emission pattern in both momentum and real space. We find a superfluid regime in which the Rayleigh scattering ring in momentum space collapses as well as its normalized intensity. We show how collective excitation spectra having no analog in equilibrium systems can be observed by tuning the excitation angle and frequency.
我们研究了由连续波激光注入平面微腔的极化激元流体的运动。在存在静态缺陷的情况下，类玻戈留波夫激发的光谱反映在动量空间和实空间中谐振瑞利散射发射图案的形状和强度上。我们发现了一种超流态，其中动量空间中的瑞利散射环及其归一化强度都会坍缩。我们展示了如何通过调整激发角和频率来观测在平衡系统中没有类似物的集体激发光谱。
