Dynamical Casimir effect in a Josephson metamaterial

  title={Dynamical Casimir effect in a Josephson metamaterial},
  author={Pasi L{\"a}hteenm{\"a}ki and Gheorghe Sorin Paraoanu and Juha Hassel and Pertti J. Hakonen},
  journal={Proceedings of the National Academy of Sciences},
  pages={4234 - 4238}
The zero-point energy stored in the modes of an electromagnetic cavity has experimentally detectable effects, giving rise to an attractive interaction between the opposite walls, the static Casimir effect. A dynamical version of this effect was predicted to occur when the vacuum energy is changed either by moving the walls of the cavity or by changing the index of refraction, resulting in the conversion of vacuum fluctuations into real photons. Here, we demonstrate the dynamical Casimir effect… 

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