Entagled pair and speed of light

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SUMMARY

The discussion centers on experiments involving entangled photon pairs, specifically measuring both particles simultaneously or within a time frame less than their separation distance divided by the speed of light (d/c). Participants highlight the significance of this timing in relation to the locality loophole in Bell's theorem tests. The conversation emphasizes the implications of achieving measurements within this timeframe and the potential insights into quantum mechanics and entanglement phenomena.

PREREQUISITES
  • Understanding of quantum entanglement and its principles
  • Familiarity with Bell's theorem and locality loophole
  • Knowledge of photon properties, particularly spin
  • Basic grasp of experimental physics methodologies
NEXT STEPS
  • Research experimental setups for measuring entangled photon pairs
  • Study the implications of locality loophole in quantum mechanics
  • Explore advanced concepts in quantum entanglement and non-locality
  • Investigate current experiments testing Bell inequalities
USEFUL FOR

Quantum physicists, experimental researchers, and students interested in the foundations of quantum mechanics and the behavior of entangled particles.

edpell
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Has anyone ever done an experiment with an entangled pair (say a pair of photons of opposite spin) where both are measured at the same time (or at least a time less than the separation, d, of the two particles divided by the speed of light, d/c)?

Less than d/c and more than d/c seem to be importantly different.
 
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Why, what do you suspect it would achieve?
 
Yes, many tests of Bell inequalities (all of which involve entangled particles) have closed the so-called locality loophole.
 

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