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Phonon Confinement by the Force of Light

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Abstract

Using superfluid optomechanical system, here we show both that radiation pressure can greatly deform superfluid film, increasing its local thickness by over a factor of 2, and that this generates new sound modes within the film locally, that are confined by the optical mode and interact strongly with it. This demonstrates a new form of dynamical backaction between the intensity of light within a cavity and the shape of the mechanical eigenmodes that it creates.

© 2018 The Author(s)

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