Non-locality distillation and post-quantum theories with trivial communication complexity
| dc.creator | Brunner, Nicolas | |
| dc.creator | Skrzypczyk, Paul | |
| dc.date | 2009-01-26 | |
| dc.date | 2009-03-31 | |
| dc.date.accessioned | 2026-07-07T13:08:44Z | |
| dc.date.available | 2026-07-07T13:08:44Z | |
| dc.description | We first present a protocol for deterministically distilling non-locality, building upon a recent result of Forster et al. [Phys. Rev. Lett. 102, 120401 (2009)]. Our protocol, which is optimal for two-copy distillation, works efficiently for a specific class of post-quantum non-local boxes, which we term correlated non-local boxes. In the asymptotic limit, all correlated non-local boxes are distilled to the maximally non-local box of Popescu and Rohrlich. Then, taking advantage of a result of Brassard \textit{et al.} [Phys. Rev. Lett. 96, 250401 (2006)] we show that all correlated non-local boxes make communication complexity trivial, and therefore appear very unlikely to exist in nature. Astonishingly, some of these non-local boxes are arbitrarily close to the set of classical correlations. This result therefore gives new insight to the problem of why quantum non-locality is limited. | |
| dc.description | 4 pages, 4 figures. To Appear in PRL | |
| dc.identifier | https://arxiv.org/abs/0901.4070 | |
| dc.identifier | http://arxiv.org/abs/0901.4070 | |
| dc.identifier | Phys. Rev. Lett. 102, 160403 (2009) | |
| dc.identifier | doi:10.1103/PhysRevLett.102.160403 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/228515 | |
| dc.subject | Quantum Physics | |
| dc.title | Non-locality distillation and post-quantum theories with trivial communication complexity | |
| dc.type | text |