Quantum-limited amplification via reservoir engineering.

  title={Quantum-limited amplification via reservoir engineering.},
  author={Anja Metelmann and Aashish A Clerk},
  journal={Physical review letters},
  volume={112 13},
We describe a new kind of phase-preserving quantum amplifier which utilizes dissipative interactions in a parametrically coupled three-mode bosonic system. The use of dissipative interactions provides a fundamental advantage over standard cavity-based parametric amplifiers: large photon number gains are possible with quantum-limited added noise, with no limitation on the gain-bandwidth product. We show that the scheme is simple enough to be implemented both in optomechanical systems and in… 

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