通过自旋轨道耦合玻色-爱因斯坦凝聚体中的激发探测超固态

QUaNtUM Gases Probing supersolidity through excitations in a spin- orbit–coupled Bose- Einstein condensate C. S. Chisholm1†‡, S. Hirthe1†, V. B. Makhalov1†§, R. Ramos1†§, R. Vatré1†¶, J. Cabedo2, A. Celi2, L. Tarruell1,3* Spin- orbit–coupled Bose- Einstein condensates are a flexible experimental platform to engineer synthetic quantum many- body systems. In particular, they host the so- called stripe phase, an instance of a supersolid state of matter. The peculiar excitation spectrum of the stripe phase, a definite footprint of its supersolidity, has been difficult to measure experimentally. In this work, we performed in situ imaging of the stripes and directly observed both superfluid and crystal excitations. …