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

Juan Yin, Yuan Cao, Hai-Lin Yong, Ji-Gang Ren, Hao Liang, Sheng-Kai Liao, Fei Zhou, Chang Liu, Yu-Ping Wu, Ge-Sheng Pan, Li Li, Nai-Le Liu, Qiang Zhang, Cheng-Zhi Peng, and Jian-Wei Pan
Phys. Rev. Lett. 110, 260407 – Published 26 June 2013

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 103 time the speed of light.

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  • Received 4 March 2013

DOI:https://doi.org/10.1103/PhysRevLett.110.260407

© 2013 American Physical Society

Authors & Affiliations

Juan Yin, Yuan Cao, Hai-Lin Yong, Ji-Gang Ren, Hao Liang, Sheng-Kai Liao, Fei Zhou, Chang Liu, Yu-Ping Wu, Ge-Sheng Pan, Li Li, Nai-Le Liu*,†, Qiang Zhang*,‡, Cheng-Zhi Peng*,§, and Jian-Wei Pan

  • Shanghai Branch, National Laboratory for Physical Sciences at Microscale, and Department of Modern Physics, University of Science and Technology of China, Shanghai 201315, China

  • *To whom all correspondence should be addressed.
  • nlliu@ustc.edu.cn
  • qiangzh@ustc.edu.cn
  • §pcz@ustc.edu.cn

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Issue

Vol. 110, Iss. 26 — 28 June 2013

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