Experimental detection of entanglement via witness operators and local measurements
In this paper we address the problem of detection of entanglement using only few local measurements when some knowledge about the state is given. The idea is based on an optimized decomposition of witness operators into local operators. We discuss two possible ways of optimizing this local decomposi...
| Main Authors: | , , , , , , |
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| Format: | Conference item |
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2002
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| _version_ | 1826299587019669504 |
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| author | Guehne, O Hyllus, P Bruss, D Ekert, A Lewenstein, M Macchiavello, C Sanpera, A |
| author_facet | Guehne, O Hyllus, P Bruss, D Ekert, A Lewenstein, M Macchiavello, C Sanpera, A |
| author_sort | Guehne, O |
| collection | OXFORD |
| description | In this paper we address the problem of detection of entanglement using only few local measurements when some knowledge about the state is given. The idea is based on an optimized decomposition of witness operators into local operators. We discuss two possible ways of optimizing this local decomposition. We present several analytical results and estimates for optimized detection strategies for NPT states of 2x2 and NxM systems, entangled states in 3 qubit systems, and bound entangled states in 3x3 and 2x4 systems. |
| first_indexed | 2024-03-07T05:04:11Z |
| format | Conference item |
| id | oxford-uuid:d95652be-1fdd-4e86-9a42-363d725e6c6d |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:04:11Z |
| publishDate | 2002 |
| record_format | dspace |
| spelling | oxford-uuid:d95652be-1fdd-4e86-9a42-363d725e6c6d2022-03-27T08:55:16ZExperimental detection of entanglement via witness operators and local measurementsConference itemhttp://purl.org/coar/resource_type/c_5794uuid:d95652be-1fdd-4e86-9a42-363d725e6c6dSymplectic Elements at Oxford2002Guehne, OHyllus, PBruss, DEkert, ALewenstein, MMacchiavello, CSanpera, AIn this paper we address the problem of detection of entanglement using only few local measurements when some knowledge about the state is given. The idea is based on an optimized decomposition of witness operators into local operators. We discuss two possible ways of optimizing this local decomposition. We present several analytical results and estimates for optimized detection strategies for NPT states of 2x2 and NxM systems, entangled states in 3 qubit systems, and bound entangled states in 3x3 and 2x4 systems. |
| spellingShingle | Guehne, O Hyllus, P Bruss, D Ekert, A Lewenstein, M Macchiavello, C Sanpera, A Experimental detection of entanglement via witness operators and local measurements |
| title | Experimental detection of entanglement via witness operators and local
measurements |
| title_full | Experimental detection of entanglement via witness operators and local
measurements |
| title_fullStr | Experimental detection of entanglement via witness operators and local
measurements |
| title_full_unstemmed | Experimental detection of entanglement via witness operators and local
measurements |
| title_short | Experimental detection of entanglement via witness operators and local
measurements |
| title_sort | experimental detection of entanglement via witness operators and local measurements |
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