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Pré-Publication, Document De Travail Année : 2010

Quantum Behavior of Measurement Apparatus

Taoufik Amri
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Résumé

We precise for the first time the quantum behavior of a measurement apparatus in the framework of the usual interpretation of quantum physics. We show how such a behavior can also be studied by the retrodiction of pre-measurement states corresponding to its responses. We translate in terms of these states some interesting properties of the behavior of an apparatus, such as the projectivity, the fidelity, the non-Gaussian character, or the non-classicality of measurements performed by this one. We also propose an experimental procedure allowing the tomography of these pre-measurement states for optical detectors. We illustrate the relevance of these new notions for measurements, by evaluating them for two detectors widely used in quantum optics: the avalanche photodiode and the homodyne detection.
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Dates et versions

hal-00447867 , version 1 (16-01-2010)
hal-00447867 , version 2 (10-04-2010)

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Taoufik Amri. Quantum Behavior of Measurement Apparatus. 2010. ⟨hal-00447867v2⟩
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