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Reading about the early Quantum entanglement experiments by performed by Ernst Bleuler and H.L. Bradt and independently by R.C. Hanna in 1948, they basically used a pair of Geiger counters set around sodium22 and when an electron annihilation event occurred that produced a pair of photons the geiger counters would click when it detected the photons, and the two geiger counters would click at the same time when it detected a pair of so called entangled photons.
They used Compton polarization where the photons would bounce off of a block of aluminum in random directions except if the photons were entangled they would go off in directions that would signify opposite polarization and the two geiger counters were set up at the correct angles to detect this and would click simultaneously.
These so called simultaneous clicks were at a higher rate then one would get if no entanglement at all existed.
My question is as follows
1) It appears that this experiment only provides evidence for the existence of entangled photons. In an ideal world (thought experiment) one could actually isolate a single pair of photons and continually change a property on one photon and see if the other photon on the opposite side has opposite changes. and demonstrate that the probability of preprogrammed photons would be too low to be a reliable explanation of this phenomenon
Have Quantum entanglement experiments evolved where they have gone beyond showing the likely existence of entanglement only as described in the above experiments of 1948. I realize that detection methods have improved since the days of geiger counters and particle accelerators are a more robust way of getting electron annihaltion events producing pairs of photons etc but has the basic idea changed since 1948?
http://www.nature.com/nature/journal/v162/n4113/abs/162332a0.html
They used Compton polarization where the photons would bounce off of a block of aluminum in random directions except if the photons were entangled they would go off in directions that would signify opposite polarization and the two geiger counters were set up at the correct angles to detect this and would click simultaneously.
These so called simultaneous clicks were at a higher rate then one would get if no entanglement at all existed.
My question is as follows
1) It appears that this experiment only provides evidence for the existence of entangled photons. In an ideal world (thought experiment) one could actually isolate a single pair of photons and continually change a property on one photon and see if the other photon on the opposite side has opposite changes. and demonstrate that the probability of preprogrammed photons would be too low to be a reliable explanation of this phenomenon
Have Quantum entanglement experiments evolved where they have gone beyond showing the likely existence of entanglement only as described in the above experiments of 1948. I realize that detection methods have improved since the days of geiger counters and particle accelerators are a more robust way of getting electron annihaltion events producing pairs of photons etc but has the basic idea changed since 1948?
http://www.nature.com/nature/journal/v162/n4113/abs/162332a0.html