dorsal/arxiv
View SchemaQuantum Superposition of Parametrically Amplified Multiphoton Pure States whitin a Decoherence-Free Schroedinger-Cat Structure
| Authors | F. A. Bovino, F. De Martini, V. Mussi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9905048 |
| URL | https://arxiv.org/abs/quant-ph/9905048 |
Abstract
The 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
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"date_created": "2026-03-02T18:02:48.007000Z",
"date_modified": "2026-03-02T18:02:48.007000Z",
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"abstract": "The new process of quantum-injection into an optical parametric amplifier\noperating in entangled configuration is adopted to amplify into a large\ndimensionality spin 1/2 Hilbert space the quantum entanglement and\nsuperposition properties of the photon-couples generated by parametric\ndown-conversion. The structure of the Wigner function and of the field\u0027s\ncorrelation functions shows a decoherence-free, multiphoton Schroedinger-cat\nbehaviour of the emitted field which is largely detectable against the\nsqueezed-vacuum noise. Furthermore, owing to its entanglement character, the\nsystem is found to exhibit multi-particle quantum nonseparability and Bell-type\nnonlocality properties. These relevant quantum features are analyzed for\nseveral travelling-wave optical configurations implying different input\nquantum-injection schemes",
"arxiv_id": "quant-ph/9905048",
"authors": [
"F. A. Bovino",
"F. De Martini",
"V. Mussi"
],
"categories": [
"quant-ph"
],
"title": "Quantum Superposition of Parametrically Amplified Multiphoton Pure States whitin a Decoherence-Free Schroedinger-Cat Structure",
"url": "https://arxiv.org/abs/quant-ph/9905048"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "2e283109-33f3-4992-a633-e4be03f070a1",
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"type": "Model",
"variant": "snapshot-2026-03-01",
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