Introduction to Quantum Noise, Measurement and Amplification

Details Introduction to Quantum Noise, Measurement and Amplification Introduction to Quantum Noise, Measurement and Amplification

2008-10-26

arxiv.org/abs/0810.4729v2

Rev. Mod. Phys. 82, 1155 (2010).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Substantial improvements over initial version; include supplemental appendices.

Scientific paper

10.1103/RevModPhys.82.1155

The topic of quantum noise has become extremely timely due to the rise of quantum information physics and the resulting interchange of ideas between the condensed matter and AMO/quantum optics communities. This review gives a pedagogical introduction to the physics of quantum noise and its connections to quantum measurement and quantum amplification. After introducing quantum noise spectra and methods for their detection, we describe the basics of weak continuous measurements. Particular attention is given to treating the standard quantum limit on linear amplifiers and position detectors using a general linear-response framework. We show how this approach relates to the standard Haus-Caves quantum limit for a bosonic amplifier known in quantum optics, and illustrate its application for the case of electrical circuits, including mesoscopic detectors and resonant cavity detectors.

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