Experimental detection of steerability in Bell local states with two measurement settings
Abstract
Steering, a quantum property stronger than entanglement but weaker than non-locality in the quantum correlation hierarchy, is a key resource for one-sided device-independent quantum key distribution applications, in which only one of the communicating parties is trusted. A fine-grained steering inequality was introduced in [PRA 90 050305(R) (2014)], enabling for the first time the detection of steering in all steerable two-qubit Werner states using only two measurement settings. Here we numerically and experimentally investigate this inequality for generalized Werner states and successfully detect steerability in a wide range of two-photon polarization-entangled Bell local states generated by a parametric down-conversion source.
Cite
@article{arxiv.1707.09293,
title = {Experimental detection of steerability in Bell local states with two measurement settings},
author = {Adeline Orieux and Marc Kaplan and Vivien Venuti and Tanumoy Pramanik and Isabelle Zaquine and Eleni Diamanti},
journal= {arXiv preprint arXiv:1707.09293},
year = {2018}
}
Comments
9 pages, 7 figures (including Appendix)