Quantum Amplification
Andrew N. Jordan, Irfan A. Siddiqi · Cambridge University Press eBooks · 2024
In Chapter 8, we devote a whole chapter to how quantum amplifiers work. We discuss phase-preserving and phase-sensitive amplification and how to realize these with heterodyne and homodyne measurements. Focusing on quantum superconducting circuits, we discuss three-wave and four-wave mixing, the different types of circuits to build in order to realize amplification, and how it can go wrong.