dorsal/arxiv
View SchemaPurity-bounded uncertainty relations in multidimensional space -- generalized purity
| Authors | Mikalai Karelin |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0411067 |
| URL | https://arxiv.org/abs/quant-ph/0411067 |
| DOI | 10.1088/0305-4470/38/28/012 |
| Journal | J. Phys. A: Math. Gen., vol. 38, pp. 6393-6403 (2005) |
Abstract
Uncertainty relations for mixed quantum states (precisely, purity-bounded position-momentum relations, developed by Bastiaans and then by Man'ko and Dodonov) are studied in general multi-dimensional case. An expression for family of mixed states at the lower bound of uncertainty relation is obtained. It is shown, that in case of entropy-bounded uncertainty relations, lower-bound state is thermal, and a transition from one-dimensional problem to multi-dimensional one is trivial. Results of numerical calculation of the relation lower bound for different types of generalized purity are presented. Analytical expressions for general purity-bounded relations for highly mixed states are obtained.
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"abstract": "Uncertainty relations for mixed quantum states (precisely, purity-bounded\nposition-momentum relations, developed by Bastiaans and then by Man\u0027ko and\nDodonov) are studied in general multi-dimensional case. An expression for\nfamily of mixed states at the lower bound of uncertainty relation is obtained.\nIt is shown, that in case of entropy-bounded uncertainty relations, lower-bound\nstate is thermal, and a transition from one-dimensional problem to\nmulti-dimensional one is trivial. Results of numerical calculation of the\nrelation lower bound for different types of generalized purity are presented.\nAnalytical expressions for general purity-bounded relations for highly mixed\nstates are obtained.",
"arxiv_id": "quant-ph/0411067",
"authors": [
"Mikalai Karelin"
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"quant-ph"
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"doi": "10.1088/0305-4470/38/28/012",
"journal_ref": "J. Phys. A: Math. Gen., vol. 38, pp. 6393-6403 (2005)",
"title": "Purity-bounded uncertainty relations in multidimensional space -- generalized purity",
"url": "https://arxiv.org/abs/quant-ph/0411067"
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