| HAL : hal-00688962, version 2 |
| arXiv : 1204.4275 |
| Fiche détaillée | Récupérer au format |
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| Versions disponibles : | v1 (19-04-2012) | v2 (04-06-2012) | v3 (23-07-2012) |
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| On small proofs of Bell-Kochen-Specker theorem for two, three and four qubits |
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| Michel Planat 1 |
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| (19/04/2012) |
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| The Bell-Kochen-Specker theorem (BKS) theorem rules out realistic {\it non-contextual} theories by resorting to impossible assignments of rays among a selected set of maximal orthogonal bases. We investigate the geometrical structure of small $v-l$ BKS-proofs involving $v$ real rays and $l$ $2n$-dimensional bases of $n$-qubits ($1< n < 5$). Specifically, we look at the parity proof $18-9$ with two qubits (A. Cabello, 1996 \cite{Cabello1996}), the parity proof $36-11$ with three qubits (M. Kernaghan \& A. Peres, 1995 \cite{Kernaghan1965}) and a newly discovered non-parity proof 80-21 with four qubits (that improves work of P.~K Aravind's group in 2008 \cite{Harvey2008}). The rays in question arise as real eigenstates shared by some maximal commuting sets (bases) of operators in the $n$-qubit Pauli group. One finds characteristic signatures of the distances between the bases, which carry various symmetries in their graphs. |
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| 1 : | Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (FEMTO-ST) |
| CNRS : UMR6174 – Université de Franche-Comté – Université de Technologie de Belfort-Montbeliard – Ecole Nationale Supérieure de Mécanique et des Microtechniques | |
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| Domaine | : | Physique/Physique Quantique Mathématiques/Théorie des groupes |
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| Bell-Kochen-Specker theorem – quantum contextuality – multiple qubits. |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00688962, version 2 | |
| http://hal.archives-ouvertes.fr/hal-00688962 | |
| oai:hal.archives-ouvertes.fr:hal-00688962 | |
| Contributeur : Michel Planat | |
| Soumis le : Lundi 4 Juin 2012, 14:30:05 | |
| Dernière modification le : Lundi 4 Juin 2012, 21:23:42 | |