@article{a6d8ece76e62423aaf661215fcd4ca35,
title = "Imaging Bell-type nonlocal behavior",
abstract = "The violation of a Bell inequality not only attests to the nonclassical nature of a system but also holds a very unique status within the quantum world. The amount by which the inequality is violated often provides a good benchmark on how a quantum protocol will perform. Acquiring images of such a fundamental quantum effect is a demonstration that images can capture and exploit the essence of the quantum world. Here, we report an experiment demonstrating the violation of a Bell inequality within observed images. It is based on acquiring full-field coincidence images of a phase object probed by photons from an entangled pair source. The image exhibits a violation of a Bell inequality with S = 2.44 ± 0.04. This result both opens the way to new quantum imaging schemes based on the violation of a Bell inequality and suggests promise for quantum information schemes based on spatial variables.",
author = "Moreau, {Paul Antoine} and Ermes Toninelli and Thomas Gregory and Aspden, {Reuben S.} and Morris, {Peter A.} and Padgett, {Miles J.}",
note = "Funding Information: P.-A.M. acknowledges the support from the European Union Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie Action (Individual MSCA Fellowship no. 706410) of the Leverhulme Trust through the Research Project Grant ECF-2018-634 and of the Lord Kelvin/Adam Smith Leadership Fellowship Scheme. M.J.P. acknowledges the financial support from the EPSRC QuantIC (EP/M01326X/1) and the ERC TWISTS (340507). R.S.A., E.T., T.G., and P.A.M. acknowledge the financial support from the UK EPSRC (EP/L016753/1 and EP/N509668/1). T.G. acknowledges support from the Professor Jim Gatheral Quantum Technology Studentship. Publisher Copyright: Copyright {\textcopyright} 2019 The Authors, some rights reserved;",
year = "2019",
month = jul,
day = "12",
doi = "10.1126/sciadv.aaw2563",
language = "English",
volume = "5",
journal = "Science Advances",
issn = "2375-2548",
publisher = "American Association for the Advancement of Science",
number = "7",
}