English

Optimal discrimination of single-qubit mixed states

Quantum Physics 2017-09-25 v2

Abstract

We consider the problem of minimum-error quantum state discrimination for single-qubit mixed states. We present a method which uses the Helstrom conditions constructively and analytically; this algebraic approach is complementary to existing geometric methods, and solves the problem for any number of arbitrary signal states with arbitrary prior probabilities.

Keywords

Cite

@article{arxiv.1704.01035,
  title  = {Optimal discrimination of single-qubit mixed states},
  author = {Graeme Weir and Stephen M. Barnett and Sarah Croke},
  journal= {arXiv preprint arXiv:1704.01035},
  year   = {2017}
}

Comments

8 pages, 1 figure