Parameter estimation for mixed states from a single copy
| dc.creator | Konrad, Thomas | |
| dc.creator | Gühne, Otfried | |
| dc.creator | Audretsch, Jürgen | |
| dc.creator | Briegel, Hans J. | |
| dc.date | 2007-02-23 | |
| dc.date | 2007-05-08 | |
| dc.date.accessioned | 2026-07-07T08:09:42Z | |
| dc.date.available | 2026-07-07T08:09:42Z | |
| dc.description | Given a single copy of a mixed state of the form ρ=λρ_1+(1-λ)ρ_2, what is the optimal measurement to estimate the parameter λ, if ρ_1 and ρ_2 are known? We present a general strategy to obtain the optimal measurements employing a Bayesian estimator. The measurements are chosen to minimize the deviation between the estimated- and the true value of λ. We explicitly determine the optimal measurements for a general two-dimensional system and for important higher dimensional cases. | |
| dc.description | 9 pages, 3 figures, v2: small changes, to appear in PRA | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0702211 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0702211 | |
| dc.identifier | Phys. Rev. A 75, 062101 (2007) | |
| dc.identifier | doi:10.1103/PhysRevA.75.062101 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/131617 | |
| dc.subject | Quantum Physics | |
| dc.title | Parameter estimation for mixed states from a single copy | |
| dc.type | text |