Some experimental covariance curve for entangled photons gives abs(Cov(0)) less than 1.(adsbygoogle = window.adsbygoogle || []).push({});

For example : Violation of Bell inequalities by photons more than 10km apart by Gisin's group in Geneva.

Does this mean that experimentally we cant predict with certainty in this case ?

In order to explain that curve I made a quantum calculation that leads to Cov(theta) equals -7/8*cos(theta) but i find it a bit weird and dont know if i can put it in this forum.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Experimental covariance curve

**Physics Forums | Science Articles, Homework Help, Discussion**