Time-energy tradeoff in unambiguous state discrimination POVM
Quantum Physics
2015-04-16 v1
Abstract
Unambiguous non-orthogonal state discrimination has fundamental importance in quantum information and quantum cryptography. The discrimination is carried out by POVM generalized measurements. For this process, we find a tradeoff between the needed energy resources and the evolution time, and express it in terms of action-like cost inequality. We find the realization that minimizes this action-like cost and show that in this case the cost is determined by the maximal population transfer from the system to the ancilla needed for the POVM implementation.
Keywords
Cite
@article{arxiv.1309.2620,
title = {Time-energy tradeoff in unambiguous state discrimination POVM},
author = {Raam Uzdin and Omri Gat},
journal= {arXiv preprint arXiv:1309.2620},
year = {2015}
}