dorsal/arxiv
View SchemaOptimal Non-Universally Covariant Cloning
| Authors | G. M. D'Ariano, P. Lo Presti |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0101100 |
| URL | https://arxiv.org/abs/quant-ph/0101100 |
| DOI | 10.1103/PhysRevA.64.042308 |
Abstract
We consider non-universal cloning maps, namely cloning transformations which are covariant under a proper subgroup G of the universal unitary group U(d), where d is the dimension of the Hilbert space H of the system to be cloned. We give a general method for optimizing cloning for any cost-function. Examples of applications are given for the phase-covariant cloning (cloning of equatorial qubits) and for the Weyl-Heisenberg group (cloning of "continuous variables").
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"abstract": "We consider non-universal cloning maps, namely cloning transformations which\nare covariant under a proper subgroup G of the universal unitary group U(d),\nwhere d is the dimension of the Hilbert space H of the system to be cloned. We\ngive a general method for optimizing cloning for any cost-function. Examples of\napplications are given for the phase-covariant cloning (cloning of equatorial\nqubits) and for the Weyl-Heisenberg group (cloning of \"continuous variables\").",
"arxiv_id": "quant-ph/0101100",
"authors": [
"G. M. D\u0027Ariano",
"P. Lo Presti"
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"doi": "10.1103/PhysRevA.64.042308",
"title": "Optimal Non-Universally Covariant Cloning",
"url": "https://arxiv.org/abs/quant-ph/0101100"
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