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Detection-Loophole-Free Test of Quantum Nonlocality, and Applications

Published

Author(s)

B. G. Christensen, Kevin McCusker, Joseph Altepeter, Brice R. Calkins, Thomas Gerrits, Adriana E. Lita, Aaron J. Miller, Lynden K. Shalm, Sae Woo Nam, P. G. Kwiat

Abstract

We present a source of entangled photons that violates a Bell inequality free of the "fair-sampling" assumption, by over 50 standard deviations, and with enough "efficiency" overhead to eventually perform a fully loophole-free test of local realism. The entanglement quality is verified by maximally violating additional Bell tests, testing the upper limit of quantum correlations. Finally, we use the source to generate secure quantum random numbers at rates 5 orders of magnitude beyond previous experiments.
Citation
Science Magazine
Volume
111
Issue
13 - 27

Keywords

detection-loophole free Bell test, transition edge sensors
Created September 26, 2013, Updated November 10, 2018