Experimental Quantum Process Discrimination
Quantum Physics
2015-05-13 v2
Abstract
Discrimination between unknown processes chosen from a finite set is experimentally shown to be possible even in the case of non-orthogonal processes. We demonstrate unambiguous deterministic quantum process discrimination (QPD) of non-orthogonal processes using properties of entanglement, additional known unitaries, or higher dimensional systems. Single qubit measurement and unitary processes and multipartite unitaries (where the unitary acts non-separably across two distant locations) acting on photons are discriminated with a confidence of in all cases.
Cite
@article{arxiv.0801.3831,
title = {Experimental Quantum Process Discrimination},
author = {Anthony Laing and Terry Rudolph and Jeremy L. O'Brien},
journal= {arXiv preprint arXiv:0801.3831},
year = {2015}
}
Comments
4 pages, 3 figures, comments welcome. Revised version includes multi-partite QPD