A new approach to characterize qubit channels
| dc.creator | Caruso, Filippo | |
| dc.creator | Giovannetti, Vittorio | |
| dc.date | 2008-02-20 | |
| dc.date.accessioned | 2026-07-07T10:02:07Z | |
| dc.date.available | 2026-07-07T10:02:07Z | |
| dc.description | We analyze qubit channels by exploiting the possibility of representing two-level quantum systems in terms of characteristic functions. To do so, we use functions of non-commuting variables (Grassmann variables), defined in terms of generalized displacement operators, following an approach which resemble the one adopted for continuous-variable (Bosonic) systems. It allows us to introduce the notion of qubit Gaussian channels and to show that they share similar properties with the corresponding continuous-variable counterpart. Some examples of qubit channels are investigated using this approach. | |
| dc.description | 6 pages, accepted for publication in the special issue of IJQI "Noise, Information and Complexity at Quantum Scale", eds. S. Mancini and F. Marchesoni (2008) | |
| dc.identifier | https://arxiv.org/abs/0802.2822 | |
| dc.identifier | http://arxiv.org/abs/0802.2822 | |
| dc.identifier | International Journal of Quantum Information 6, 621 (2008) | |
| dc.identifier | doi:10.1142/S0219749908003864 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/168861 | |
| dc.subject | Quantum Physics | |
| dc.title | A new approach to characterize qubit channels | |
| dc.type | text |