Teleportation fidelity as a probe of sub-Planck phase-space structure
| dc.creator | Scott, A. J. | |
| dc.creator | Caves, Carlton M. | |
| dc.date | 2008-01-08 | |
| dc.date.accessioned | 2026-07-07T10:05:08Z | |
| dc.date.available | 2026-07-07T10:05:08Z | |
| dc.description | We investigate the connection between sub-Planck structure in the Wigner function and the output fidelity of continuous-variable teleportation protocols. When the teleporting parties share a two-mode squeezed state as an entangled resource, high fidelity in the output state requires a squeezing large enough that the smallest sub-Planck structures in an input pure state are teleported faithfully. We formulate this relationship, which leads to an explicit relation between the fine-scale structure in the Wigner function and large-scale extent of the Wigner function, and we treat specific examples, including coherent, number, and random states and states produced by chaotic dynamics. We generalize the pure-state results to teleportation of mixed states. | |
| dc.description | 19 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/0801.1154 | |
| dc.identifier | http://arxiv.org/abs/0801.1154 | |
| dc.identifier | Ann. Phys. 323, 2685 (2008) | |
| dc.identifier | doi:10.1016/j.aop.2008.01.007 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/169919 | |
| dc.subject | Quantum Physics | |
| dc.title | Teleportation fidelity as a probe of sub-Planck phase-space structure | |
| dc.type | text |