Fidelity of Gaussian channels
| dc.creator | Caves, Carlton M. | |
| dc.creator | Wodkiewicz, Krzysztof | |
| dc.date | 2004-09-10 | |
| dc.date.accessioned | 2026-07-07T06:10:50Z | |
| dc.date.available | 2026-07-07T06:10:50Z | |
| dc.description | A noisy Gaussian channel is defined as a channel in which an input field mode is subjected to random Gaussian displacements in phase space. We introduce the quantum fidelity of a Gaussian channel for pure and mixed input states, and we derive a universal scaling law of the fidelity for pure initial states. We also find the maximum fidelity of a Gaussian channel over all input states. Quantum cloning and continuous-variable teleportation are presented as physical examples of Gaussian channels to which the fidelity results can be applied. | |
| dc.description | Based on invited talk given by KW at XXXVI Symposium on Mathematical Physics, "Open Systems and Quantum Information," Torun, Poland, June 9-12, 2004. To be published in Open Systems and Information Dynamics | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0409063 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0409063 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/92361 | |
| dc.subject | Quantum Physics | |
| dc.title | Fidelity of Gaussian channels | |
| dc.type | text |