"Haunted" quantum contextuality
| dc.creator | Svozil, Karl | |
| dc.date | 1999-07-05 | |
| dc.date | 1999-08-04 | |
| dc.date.accessioned | 2026-07-07T06:16:46Z | |
| dc.date.available | 2026-07-07T06:16:46Z | |
| dc.description | Two entangled particles in threedimensional Hilbert space (per particle) are considered in an EPR-type arrangement. On each side the Kochen-Specker observables $\{J_1^2,J_2^2,J_3^2\}$ and $\{\bar J_1^2, \bar J_2^2,J_3^2\}$ with $[J_1^2,\bar J_1^2]\neq 0$ are measured. The outcomes of measurements of $J_3^2$ (via $J_1^2,J_2^2$) and $J_3^2$ (via $\bar J_1^2,\bar J_2^2$) are compared. Although formally $J_3^2$ is associated with the same projection operator, a strong form of quantum contextuality states that an outcome depends on the complete disposition of the measurement apparatus, in particular whether $J_1^2$ or $\bar J_1^2$ is measured alongside. It is argued that in this case it is impossible to measure contextuality directly, a necessary condition being a non-operational counterfactuality of the argument. | |
| dc.identifier | https://arxiv.org/abs/quant-ph/9907015 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/9907015 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/94169 | |
| dc.subject | Quantum Physics | |
| dc.title | "Haunted" quantum contextuality | |
| dc.type | text |