dorsal/arxiv
View SchemaSeparability of entangled q-bit pairs
| Authors | Berthold-Georg Englert, Nasser Metwally |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9912089 |
| URL | https://arxiv.org/abs/quant-ph/9912089 |
| DOI | 10.1080/09500340008235144 |
| Journal | Journal of Modern Optics, vol. 47, 2000, pp. 2221-2231 |
Abstract
The state of an entangled q-bit pair is specified by 15 numerical parameters that are naturally regarded as the components of two 3-vectors and a $3\times3$-dyadic. There are easy-to-use criteria to check whether a given pair of 3-vectors plus a dyadic specify a 2-q-bit state; and if they do, whether the state is entangled; and if it is, whether it is a separable state. Some progress has been made in the search for analytical expressions for the degree of separability. We report, in particular, the answer in the case of vanishing 3-vectors.
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"abstract": "The state of an entangled q-bit pair is specified by 15 numerical parameters\nthat are naturally regarded as the components of two 3-vectors and a\n$3\\times3$-dyadic. There are easy-to-use criteria to check whether a given pair\nof 3-vectors plus a dyadic specify a 2-q-bit state; and if they do, whether the\nstate is entangled; and if it is, whether it is a separable state. Some\nprogress has been made in the search for analytical expressions for the degree\nof separability. We report, in particular, the answer in the case of vanishing\n3-vectors.",
"arxiv_id": "quant-ph/9912089",
"authors": [
"Berthold-Georg Englert",
"Nasser Metwally"
],
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"doi": "10.1080/09500340008235144",
"journal_ref": "Journal of Modern Optics, vol. 47, 2000, pp. 2221-2231",
"title": "Separability of entangled q-bit pairs",
"url": "https://arxiv.org/abs/quant-ph/9912089"
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