Optimization of quantum universal detectors
| dc.creator | D'Ariano, G. M. | |
| dc.creator | Perinotti, P. | |
| dc.creator | Sacchi, M. F. | |
| dc.date | 2003-09-22 | |
| dc.date.accessioned | 2026-07-07T06:07:53Z | |
| dc.date.available | 2026-07-07T06:07:53Z | |
| dc.description | The expectation value <O> of an arbitrary operator O can be obtained via a universal measuring apparatus that is independent of O, by changing only the data-processing of the outcomes. Such a ``universal detector'' performs a joint measurement on the system and on a suitable ancilla prepared in a fixed state, and is equivalent to a positive operator valued measure (POVM) for the system that is ``informationally complete''. The data processing functions generally are not unique, and we pose the problem of their optimization, providing some examples for covariant POVM's, in particular for SU(d) covariance group. | |
| dc.description | 8 pages, no figures. Proceedingsof the 8th International Conference on Squeezed States and Uncertainty Relations ICSSUR' 2003, Puebla, Mexico - June 9-13, 2003 | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0309161 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0309161 | |
| dc.identifier | in "Proceedings of the 8th Int. Conf. on Squeezed States and Uncertainty Relations", ed. by H. Moya-Cessa et al., (Rinton, Princeton, 2003) p. 86 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/91453 | |
| dc.subject | Quantum Physics | |
| dc.title | Optimization of quantum universal detectors | |
| dc.type | text |