dorsal/arxiv
View SchemaEconomical realization of phase covariant devices in arbitrary dimensions
| Authors | Francesco Buscemi, Giacomo Mauro D'Ariano, Chiara Macchiavello |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0606120 |
| URL | https://arxiv.org/abs/quant-ph/0606120 |
| DOI | 10.1364/JOSAB.24.000363 |
| Journal | J. Opt. Soc. Am. B 24, 363 (2007) |
Abstract
We describe a unified framework of phase covariant multi user quantum transformations for d-dimensional quantum systems. We derive the optimal phase covariant cloning and transposition tranformations for multi phase states. We show that for some particular relations between the input and output number of copies they correspond to economical tranformations, which can be achieved without the need of auxiliary systems. We prove a relation between the optimal phase covariant cloning and transposition maps, and optimal estimation of multiple phases for equatorial states.
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"abstract": "We describe a unified framework of phase covariant multi user quantum\ntransformations for d-dimensional quantum systems. We derive the optimal phase\ncovariant cloning and transposition tranformations for multi phase states. We\nshow that for some particular relations between the input and output number of\ncopies they correspond to economical tranformations, which can be achieved\nwithout the need of auxiliary systems. We prove a relation between the optimal\nphase covariant cloning and transposition maps, and optimal estimation of\nmultiple phases for equatorial states.",
"arxiv_id": "quant-ph/0606120",
"authors": [
"Francesco Buscemi",
"Giacomo Mauro D\u0027Ariano",
"Chiara Macchiavello"
],
"categories": [
"quant-ph"
],
"doi": "10.1364/JOSAB.24.000363",
"journal_ref": "J. Opt. Soc. Am. B 24, 363 (2007)",
"title": "Economical realization of phase covariant devices in arbitrary dimensions",
"url": "https://arxiv.org/abs/quant-ph/0606120"
},
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