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Atomic probe Wigner tomography of a nanomechanical system

Atomic probe Wigner tomography of a nanomechanical system We propose a scheme to measure the quantum state of a nanomechanical oscillator cooled near its ground state of vibrational motion. This is an extension of the nonlinear atomic homodyning technique scheme first developed to measure the intracavity field in a micromaser. It involves the use of a detector atom that is simultaneously coupled to the resonator via a magnetic interaction and to (classical) optical fields via a Raman transition. We show that the probability for the atom to be found in the ground state is a direct measure of the Wigner characteristic function of the nanomechanical oscillator. We also investigate the back-action effect of this destructive measurement on the state of the resonator. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

Atomic probe Wigner tomography of a nanomechanical system

Physical Review A , Volume 81 (4) – Apr 1, 2010
4 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2010 The American Physical Society
ISSN
1094-1622
DOI
10.1103/PhysRevA.81.041804
Publisher site
See Article on Publisher Site

Abstract

We propose a scheme to measure the quantum state of a nanomechanical oscillator cooled near its ground state of vibrational motion. This is an extension of the nonlinear atomic homodyning technique scheme first developed to measure the intracavity field in a micromaser. It involves the use of a detector atom that is simultaneously coupled to the resonator via a magnetic interaction and to (classical) optical fields via a Raman transition. We show that the probability for the atom to be found in the ground state is a direct measure of the Wigner characteristic function of the nanomechanical oscillator. We also investigate the back-action effect of this destructive measurement on the state of the resonator.

Journal

Physical Review AAmerican Physical Society (APS)

Published: Apr 1, 2010

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