Linear response theory describes quantum measurement with an arbitrary detector weakly coupled to a measured system. This description produces generic quantitative relation characterizing the detector that is analogous to the fluctuation-dissipation theorem for equilibrium systems. The detector characteristic obtained in this way shows how efficient the trade-off is between the back-action dephasing and information acquisition by the detector.
CITATION STYLE
Averin, D. V. (2003). Linear Quantum Measurements. In Quantum Noise in Mesoscopic Physics (pp. 229–239). Springer Netherlands. https://doi.org/10.1007/978-94-010-0089-5_11
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