Bounding the speed of `spooky action at a distance'

2013/03/04 by Juan Yin, Yuan Cao, Hai-Lin Yong +13 · 3 voices · 88 citations
Computer Science · Physics and Astronomy · #Action (physics) #Bell's theorem #EPR paradox #Einstein #Inertial frame of reference #Locality #Philosophy #Physics #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Speed of light (cellular automaton) #Theoretical physics #quant-ph

paper · pdf · doi:10.1103/physrevlett.110.260407

published in Physical Review Letters 110(26), 260407 (American Physical Society) · 11 pages, 4 figures

arxiv created 2013/06/18 · openalex publication_date 2013/06/26 · arxiv updated 2018/05/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In the well-known EPR paper, Einstein et al. called the nonlocal correlation in quantum entanglement as `spooky action at a distance'. If the spooky action does exist, what is its speed? All previous experiments along this direction have locality loopholes and thus can be explained without having to invoke any `spooky action' at all. Here, we strictly closed the locality loopholes by observing a 12-hour continuous violation of Bell inequality and concluded that the lower bound speed of `spooky action' was four orders of magnitude of the speed of light if the Earth's speed in any inertial reference frame was less than 10^(-3) times of 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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