preprintScienceJan 29, 2026GREEN OA

Probing supersolidity through excitations in a spin-orbit–coupled Bose-Einstein condensate

CSC. S. ChisholmSHSarah HirtheVMVasiliy MakhalovRRRamón RamosRVRémy Vatré

Institute of Photonic Sciences · Universitat Autònoma de Barcelona · +1 more institution

PubMed
Indexed inarxivcrossrefdatacitepubmed

Abstract

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. We investigated superfluid hydrodynamics and revealed a stripe compression mode, thus demonstrating that the system possesses a compressible crystalline structure. Through the frequency softening of this mode, we located the…

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Topics & keywords

Topics
Keywords
  • Bose–Einstein condensate
  • Physics
  • Spin (aerodynamics)
  • Orbit (dynamics)
  • Condensed matter physics
  • Quantum mechanics
  • Aerospace engineering
  • Engineering
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