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Updated: May 1, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Experimental violation of a Bell's inequality with efficient detection

M A Rowe1, D Kielpinski, V Meyer

  • 1Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA.

Nature
|March 10, 2001
PubMed
Summary

This study experimentally refutes local realism, a foundational concept in physics. Using entangled ions, researchers demonstrated a violation of Bell's inequality, confirming quantum mechanics over classical interpretations.

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