Experimental semi-device-independent certification of entangled measurements
Quantum Physics
2014-09-19 v1
Abstract
Certifying the entanglement of quantum states with Bell inequalities allows one to guarantee the security of quantum information protocols independently of imperfections in the measuring devices. Here we present a similar procedure for witnessing entangled measurements, which play a central role in many quantum information tasks. Our procedure is termed semi-device-independent, as it uses uncharacterized quantum preparations of fixed Hilbert space dimension. Using a photonic setup, we experimentally certify an entangled measurement using measurement statistics only. We also apply our techniques to certify unentangled but nevertheless inherently quantum measurements.
Keywords
Cite
@article{arxiv.1404.1422,
title = {Experimental semi-device-independent certification of entangled measurements},
author = {Adam Bennet and Tamás Vértesi and Dylan J. Saunders and Nicolas Brunner and G. J. Pryde},
journal= {arXiv preprint arXiv:1404.1422},
year = {2014}
}
Comments
7 pages, 2 figures