dorsal/arxiv
View SchemaContextual Realization of the Universal Quantum Cloning Machine and of the Universal-NOT gate by Quantum Injected Optical Parametric Amplification
| Authors | D. Pelliccia, V. Schettini, F. Sciarrino, C. Sias, F. De Martini |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0302087 |
| URL | https://arxiv.org/abs/quant-ph/0302087 |
| DOI | 10.1103/PhysRevA.68.042306 |
| Journal | Phys. Rev. A 68, 042306 (2003) |
Abstract
A simultaneous, contextual experimental demonstration of the two processes of cloning an input qubit and of flipping it into the orthogonal qubit is reported. The adopted experimental apparatus, a Quantum-Injected Optical Parametric Amplifier (QIOPA) is transformed simultaneously into a Universal Optimal Quantum Cloning Machine (UOQCM) and into a Universal NOT quantum-information gate. The two processes, indeed forbidden in their exact form for fundamental quantum limitations, will be found to be universal and optimal, i.e. the measured fidelity of both processes F<1 will be found close to the limit values evaluated by quantum theory. A contextual theoretical and experimental investigation of these processes, which may represent the basic difference between the classical and the quantum worlds, can reveal in a unifying manner the detailed structure of quantum information. It may also enlighten the yet little explored interconnections of fundamental axiomatic properties within the deep structure of quantum mechanics. PACS numbers: 03.67.-a, 03.65.Ta, 03.65.Ud
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"abstract": "A simultaneous, contextual experimental demonstration of the two processes of\ncloning an input qubit and of flipping it into the orthogonal qubit is\nreported. The adopted experimental apparatus, a Quantum-Injected Optical\nParametric Amplifier (QIOPA) is transformed simultaneously into a Universal\nOptimal Quantum Cloning Machine (UOQCM) and into a Universal NOT\nquantum-information gate. The two processes, indeed forbidden in their exact\nform for fundamental quantum limitations, will be found to be universal and\noptimal, i.e. the measured fidelity of both processes F\u003c1 will be found close\nto the limit values evaluated by quantum theory. A contextual theoretical and\nexperimental investigation of these processes, which may represent the basic\ndifference between the classical and the quantum worlds, can reveal in a\nunifying manner the detailed structure of quantum information. It may also\nenlighten the yet little explored interconnections of fundamental axiomatic\nproperties within the deep structure of quantum mechanics. PACS numbers:\n03.67.-a, 03.65.Ta, 03.65.Ud",
"arxiv_id": "quant-ph/0302087",
"authors": [
"D. Pelliccia",
"V. Schettini",
"F. Sciarrino",
"C. Sias",
"F. De Martini"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.68.042306",
"journal_ref": "Phys. Rev. A 68, 042306 (2003)",
"title": "Contextual Realization of the Universal Quantum Cloning Machine and of the Universal-NOT gate by Quantum Injected Optical Parametric Amplification",
"url": "https://arxiv.org/abs/quant-ph/0302087"
},
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