Quantum non-demolition measurements in optics: a review and some recent experimental results

Abstract : We review the schemes which have been implemented, in order to achieve quantum non-demolition (QND) measurements in the optical domain. The simplest schemes can be obtained using the optical Kerr effect, which yields a crossed-phase modulation coupling between two light beams. Other schemes use either independently generated squeezed light, or coupled-mode parametric amplifiers. These various schemes can be characterized using three criteria, which describe, respectively, the quality of the quantum measurement, the non-destruction of the signal, and the conditional variance of the output signal beam, given the output ldquometerrdquo beam (quantum-state preparation criterion). We show that quantitative limits can be defined with respect to these criteria, delimiting ldquoclassicalrdquo and ldquoquantumrdquo domains of operation. Then we present in more detail a new experimental implementation of QND measurements, using three-level atoms inside a doubly-resonant optical cavity.
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https://hal-iogs.archives-ouvertes.fr/hal-00559094
Contributor : Philippe Grangier <>
Submitted on : Monday, January 24, 2011 - 5:44:06 PM
Last modification on : Wednesday, May 15, 2019 - 3:48:51 AM

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Jean-François Roch, Gérard Roger, Philippe Grangier, Jean-Michel Courty, Serge Reynaud. Quantum non-demolition measurements in optics: a review and some recent experimental results. Applied Physics B - Laser and Optics, Springer Verlag, 1992, 55 (3), pp.291-297. ⟨10.1007/BF00325017⟩. ⟨hal-00559094⟩

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