Unambiguous discrimination between two unknown qudit states

Authors:
Tao Zhou
Affiliations:
Department of Physics, Tsinghua University, Beijing, China 100084 and Department of Physics, Sichuan University, Chengdu, China 610064
Venue:
Quantum Information Processing
Year:
2012

Citing 0
Cited 2

Influence of detector motion on discrimination between photon polarizations

Quantum Information Processing
Multicopy programmable discriminators between two unknown qubit states with group-theoretic approach

Quantum Information & Computation

Quantified Score

Hi-index	0.00

Visualization

Abstract

We consider the unambiguous discrimination between two unknown qudit states in n-dimensional (n 驴 2) Hilbert space. By equivalence of unknown pure states to known mixed states and with the Jordan-basis method, we demonstrate that the optimal success probability of the discrimination between two unknown states is independent of the dimension n. We also give a scheme for a physical implementation of the programmable state discriminator that can unambiguously discriminate between two unknown states with optimal probability of success.