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Quantum limited amplification with a nonlinear cavity detector
Catherine Laflamme, Aashish A. Clerk
We consider the quantum measurement properties of a driven cavity with a Kerr-type nonlinearity which is used to amplify a dispersively coupled input signal. Focusing on an operati…
Scattering approach to backaction in coherent nanoelectromechanical systems
Steven D. Bennett, Jesse Maassen, Aashish A. Clerk
We present theoretical results for the backaction force noise and damping of a mechanical oscillator whose position is measured by a mesoscopic conductor. Our scattering approach i…
Quantum Measurement of Phonon Shot Noise
Aashish Clerk, Florian Marquardt, Jack Harris
We provide a full quantum mechanical analysis of a weak energy measurement of a driven mechanical resonator. We demonstrate that measurements too weak to resolve individual mechani…