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 superconducting microwave circuits.
@article{arxiv.1311.0273,
title = {Quantum-Limited Amplification via Reservoir Engineering},
author = {A. Metelmann and A. A. Clerk},
journal= {arXiv preprint arXiv:1311.0273},
year = {2014}
}