Experimental Test of Local Hidden-Variable Theories Academic Article uri icon


  • We have measured the linear polarization correlation between the two photons from the 7S13→6P13→6S01 cascade of Hg200. The results were used to evaluate Freedman's version of the Bell inequality, δ<~0. Our result is δexp=+0.046±0.014, in clear violation of the inequality and in excellent agreement with the quantum mechanical prediction, δQM=+0.044±0.007. An important feature of the experiment was the explicit measurement of the initial density matrix for the cascading atoms. © 1976 The American Physical Society.

author list (cited authors)

  • Fry, E. S., & Thompson, R. C

complete list of authors

  • Fry, Edward S||Thompson, Randall C

publication date

  • January 1, 1976 11:11 AM