Parameter Estimation with Mixed-State Quantum Computation
| dc.creator | Somma, Rolando D. | |
| dc.creator | Boixo, Sergio | |
| dc.date | 2007-08-09 | |
| dc.date | 2008-04-15 | |
| dc.date.accessioned | 2026-07-07T09:47:54Z | |
| dc.date.available | 2026-07-07T09:47:54Z | |
| dc.description | We present a quantum algorithm to estimate parameters at the quantum metrology limit using deterministic quantum computation with one bit. When the interactions occurring in a quantum system are described by a Hamiltonian $H= θH_0$, we estimate $θ$ by zooming in on previous estimations and by implementing an adaptive Bayesian procedure. The final result of the algorithm is an updated estimation of $θ$ whose variance has been decreased in proportion to the time of evolution under H. For the problem of estimating several parameters, we implement dynamical-decoupling techniques and use the results of single parameter estimation. The cases of discrete-time evolution and reference-frame alignment are also discussed within the adaptive approach. | |
| dc.description | 12 pages. Improved introduction and technical details moved to Appendix | |
| dc.identifier | https://arxiv.org/abs/0708.1330 | |
| dc.identifier | http://arxiv.org/abs/0708.1330 | |
| dc.identifier | Phys. Rev. A 77, 052320 (2008) | |
| dc.identifier | doi:10.1103/PhysRevA.77.052320 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/164018 | |
| dc.subject | Quantum Physics | |
| dc.title | Parameter Estimation with Mixed-State Quantum Computation | |
| dc.type | text |