A stripe phase with supersolid properties in spin–orbit-coupled Bose–Einstein condensates

Abstract

One such system is a Bose-Einstein condensate with spin-orbit coupling, which has a supersolid stripe phase 5-8 . Despite several recent studies of this system 9-11 , which studied the miscibility of the spin components 5 , the presence of stripes has not been detected. Here we report the direct observation of the predicted density modulation of the stripe phase using Bragg reflection. Our work establishes a system with * These authors contributed equally to this work. § junruli@mit.edu † Although the original observation of supersolidity 3 turned out to be caused by unusual elastic properties, experiments revealed quantum plasticity and mass supertransport, probably created by superfluid flow through the cores of interconnected dislocations 1,4

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