Superfluid Brillouin optomechanics

@article{Kashkanova2017SuperfluidBO,
  title={Superfluid Brillouin optomechanics},
  author={Anna D Kashkanova and Alexey Shkarin and C. D. Brown and Nathan E. Flowers-Jacobs and Lilian I Childress and Sebastian W. Hoch and Leander Hohmann and Konstantin Ott and Jakob Reichel and J. G. E. Harris},
  journal={Nature Physics},
  year={2017},
  volume={13},
  pages={74-79}
}
An optomechanical system made of an optical cavity filled with superfluid liquid helium provides the means to study phenomena involving different degrees of freedom than those in traditional solid-state resonators. 
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