en
Scientific article
Open access
English

Various quantum nonlocality tests with a commercial two-photon entanglement source

Published inPhysical review, A, Atomic, molecular, and optical physics, vol. 83, no. 5, p. 052104-1/7
Publication date2011
Abstract

Nonlocality is a fascinating and counterintuitive aspect of nature, revealed by the violation of a Bell inequality. The standard and easiest configuration in which Bell inequalities can be measured has been proposed by Clauser-Horne-Shimony-Holt (CHSH). However, alternative nonlocality tests can also be carried out. In particular, Bell inequalities requiring multiple measurement settings can provide deeper fundamental insights about quantum nonlocality, as well as offering advantages in the presence of noise and detection inefficiency. In this paper we show how these nonlocality tests can be performed using a commercially available source of entangled photon pairs. We report the violation of a series of these nonlocality tests (I3322, I4422, and chained inequalities). With the violation of the chained inequality with 4 settings per side we put an upper limit at 0.49 on the local content of the states prepared by the source (instead of 0.63 attainable with CHSH). We also quantify the amount of true randomness that has been created during our experiment (assuming fair sampling of the detected events).

Citation (ISO format)
POMARICO, Enrico et al. Various quantum nonlocality tests with a commercial two-photon entanglement source. In: Physical review, A, Atomic, molecular, and optical physics, 2011, vol. 83, n° 5, p. 052104–1/7. doi: 10.1103/PhysRevA.83.052104
Main files (1)
Article (Accepted version)
accessLevelPublic
Identifiers
ISSN of the journal1050-2947
640views
414downloads

Technical informations

Creation05/12/2011 2:47:00 PM
First validation05/12/2011 2:47:00 PM
Update time03/14/2023 4:51:51 PM
Status update03/14/2023 4:51:51 PM
Last indexation01/15/2024 10:22:48 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack