Enhancing Optomechanical Coupling via the Josephson Effect

@article{Heikkila2014EnhancingOC,
  title={Enhancing Optomechanical Coupling via the Josephson Effect},
  author={Tero T. Heikkila and Francesco Massel and Jani Tuorila and Raphael Khan and Mika Sillanpaa},
  journal={Physical Review Letters},
  year={2014},
  volume={112},
  pages={203603}
}
Cavity optomechanics is showing promise for studying quantum mechanics in large systems. However, smallness of the radiation-pressure coupling is a serious hindrance. Here we show how the charge tuning of the Josephson inductance in a single-Cooper-pair transistor (SCPT) can be exploited to arrange a strong radiation pressure -type coupling $g_0$ between mechanical and microwave resonators. In a certain limit of parameters, such a coupling can also be seen as a qubit-mediated coupling of two… Expand

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