DPG Phi
Verhandlungen
Verhandlungen
DPG

Darmstadt 2008 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 28: Poster Quanteninformation

Q 28.1: Poster

Dienstag, 11. März 2008, 16:30–19:00, Poster C2

Adaptive Estimation of Qubits by Linear Optical Measurements — •Christof Happ and Matthias Freyberger — Institut für Quantenphysik, Universität Ulm, 89069 Ulm

Optical measurement methods for the estimation of an unknown qubit, of which only a limited number N of copies is available, are discussed. The studied methods compare a single copy of the unknown state |ψ⟩ to an arbitrary ruler state |rν⟩ by beam splitter measurements. Using Monte Carlo simulations, schemes for estimating |ψ⟩ as well as for adapting a reference state |rν⟩ for further measurements on remaining copies of |ψ⟩ were investigated. We present simulation results assessing the quality of estimation by the average fidelity |⟨ψ|ψNest⟩|2 between unknown and finally estimated state |ψNest⟩.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2008 > Darmstadt