dorsal/arxiv
View SchemaImplementation of optimal phase-covariant cloning machines
| Authors | Fabio Sciarrino, Francesco De Martini |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0609105 |
| URL | https://arxiv.org/abs/quant-ph/0609105 |
| DOI | 10.1103/PhysRevA.76.012330 |
| Journal | Phys. Rev. A 76, 012330 (2007) |
Abstract
The optimal phase covariant cloning machine (PQCM) broadcasts the information associated to an input qubit into a multi-qubit systems, exploiting a partial a-priori knowledge of the input state. This additional a priori information leads to a higher fidelity than for the universal cloning. The present article first analyzes different experimental schemes to implement the 1->3 PQCM. The method is then generalized to any 1->M machine for odd value of M by a theoretical approach based on the general angular momentum formalism. Finally different experimental schemes based either on linear or non-linear methods and valid for single photon polarization encoded qubits are discussed.
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"abstract": "The optimal phase covariant cloning machine (PQCM) broadcasts the information\nassociated to an input qubit into a multi-qubit systems, exploiting a partial\na-priori knowledge of the input state. This additional a priori information\nleads to a higher fidelity than for the universal cloning. The present article\nfirst analyzes different experimental schemes to implement the 1-\u003e3 PQCM. The\nmethod is then generalized to any 1-\u003eM machine for odd value of M by a\ntheoretical approach based on the general angular momentum formalism. Finally\ndifferent experimental schemes based either on linear or non-linear methods and\nvalid for single photon polarization encoded qubits are discussed.",
"arxiv_id": "quant-ph/0609105",
"authors": [
"Fabio Sciarrino",
"Francesco De Martini"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.76.012330",
"journal_ref": "Phys. Rev. A 76, 012330 (2007)",
"title": "Implementation of optimal phase-covariant cloning machines",
"url": "https://arxiv.org/abs/quant-ph/0609105"
},
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