Quantum Superposition of Parametrically Amplified Multiphoton Pure States whitin a Decoherence-Free Schroedinger-Cat Structure

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dc.creatorBovino, F. A.
dc.creatorDe Martini, F.
dc.creatorMussi, V.
dc.date1999-05-14
dc.date.accessioned2026-07-07T06:16:32Z
dc.date.available2026-07-07T06:16:32Z
dc.descriptionThe new process of quantum-injection into an optical parametric amplifier operating in entangled configuration is adopted to amplify into a large dimensionality spin 1/2 Hilbert space the quantum entanglement and superposition properties of the photon-couples generated by parametric down-conversion. The structure of the Wigner function and of the field's correlation functions shows a decoherence-free, multiphoton Schroedinger-cat behaviour of the emitted field which is largely detectable against the squeezed-vacuum noise. Furthermore, owing to its entanglement character, the system is found to exhibit multi-particle quantum nonseparability and Bell-type nonlocality properties. These relevant quantum features are analyzed for several travelling-wave optical configurations implying different input quantum-injection schemes
dc.description25 pages, 5 figures, submitted to Phys. Rev. A
dc.identifierhttps://arxiv.org/abs/quant-ph/9905048
dc.identifierhttp://arxiv.org/abs/quant-ph/9905048
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/94089
dc.subjectQuantum Physics
dc.titleQuantum Superposition of Parametrically Amplified Multiphoton Pure States whitin a Decoherence-Free Schroedinger-Cat Structure
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