Lower Bound on the Speed of Nonlocal Correlations without Locality and Measurement Choice Loopholes

2013/03/04 by Juan Yin, Yuan Cao, Hai-Lin Yong +13 · 3 voices · 2 citations
Physics and Astronomy · Computer Science · #Quantum Mechanics and Applications #Quantum Information and Cryptography #Quantum Electrodynamics and Casimir Effect

paper · pdf · doi:10.1103/physrevlett.110.260407

Abstract

In their well-known paper, Einstein, Podolsky, and Rosen called the nonlocal correlation in quantum entanglement a "spooky action at a distance." If the spooky action does exist, what is its speed? All previous experiments along this direction have locality and freedom-of-choice loopholes. Here, we strictly closed the loopholes by observing a 12 h continuous violation of the Bell inequality and concluded that the lower bound speed of spooky action was 4 orders of magnitude of the speed of light if Earth's speed in any inertial reference frame was less than 10(-3) time the speed of light.

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Discussions

• Bounding the speed of ‘spooky action at a distance’ [hn, 47 points, 52 comments]
• As Tobias indicates, there are some similar questions that have good answers. However, in some ways they really beg the question (so to speak). Entangled systems have spatiotemporal extent. There are [stackexchange, 3 points]
• With an experiment described in their 2013 paper Bounding the speed of `spooky action at a distance' Juan Yin et al showed that: the lower bound speed of `spooky action' was four orders of magnitude o [stackexchange, 3 points]

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