Quantum State Discrimination Using the Minimum Average Number of Copies
Quantum Physics
2017-02-21 v3 Optics
Abstract
In the task of discriminating between nonorthogonal quantum states from multiple copies, the key parameters are the error probability and the resources (number of copies) used. Previous studies have considered the task of minimizing the average error probability for fixed resources. Here we introduce a new state discrimination task: minimizing the average resources for a fixed admissible error probability. We show that this new task is not performed optimally by previously known strategies, and derive and experimentally test a detection scheme that performs better.
Cite
@article{arxiv.1605.07807,
title = {Quantum State Discrimination Using the Minimum Average Number of Copies},
author = {Sergei Slussarenko and Morgan M. Weston and Jun-Gang Li and Nicholas Campbell and Howard M. Wiseman and Geoff J. Pryde},
journal= {arXiv preprint arXiv:1605.07807},
year = {2017}
}
Comments
5 pages, 4 figures, supplementary material in ancillary files