Reduction Theorems for Optimal Unambiguous State Discrimination of Density Matrices
Quantum Physics
2008-06-04 v2
Abstract
We present reduction theorems for the problem of optimal unambiguous state discrimination (USD) of two general density matrices. We show that this problem can be reduced to that of two density matrices that have the same rank and are described in a Hilbert space of dimensions . We also show how to use the reduction theorems to discriminate unambiguously between N mixed states (N \ge 2).
Keywords
Cite
@article{arxiv.quant-ph/0304179,
title = {Reduction Theorems for Optimal Unambiguous State Discrimination of Density Matrices},
author = {Philippe Raynal and Norbert Lütkenhaus and Steven J. van Enk},
journal= {arXiv preprint arXiv:quant-ph/0304179},
year = {2008}
}
Comments
6 pages, 1 figure