Information transfer using entanglement?

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SUMMARY

This discussion centers on the impossibility of transferring information using quantum entanglement, specifically involving particles A and B in a singlet state. It is established that measurements on an entangled system do not transmit information at any speed, including faster than light. The conversation explores the effects of changing detector angles on the outcomes of measurements, concluding that while correlations exist, they do not imply information transfer. The concept of quantum super-dense coding is introduced, demonstrating that entanglement can be utilized to encode more information than classical methods allow.

PREREQUISITES
  • Understanding of quantum mechanics principles, particularly entanglement.
  • Familiarity with Bell states and their significance in quantum information theory.
  • Knowledge of quantum measurement theory and its implications for information transfer.
  • Basic proficiency in statistical analysis related to quantum experiments.
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  • Research quantum super-dense coding and its applications in quantum communication.
  • Study Bell's theorem and its implications for local hidden variable theories.
  • Explore the mathematical framework of quantum mechanics, focusing on the sin² formula for probability calculations.
  • Investigate the role of measurement angles in quantum entanglement experiments and their effects on correlation outcomes.
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Quantum physicists, researchers in quantum information science, and anyone interested in the foundational principles of quantum mechanics and entanglement.

  • #31
@morrobay: thanks for your example in post #15 and the example in the paper. I am sorry, with all due respect, but I am not sure what you are saying here. Are you saying that the outcomes are interdependent, and that they are not dependent on the settings?

Then I would agree, with the caveat that the outcomes may depend on the settings. :smile:

I think that there is - in principle - not enough information to establish how the outcomes are created. The situation is symmetrical, so it could go either way. B depends on A and vice versa. However, that is my point: because there is not enough information in principle, that leaves room for the possibility that B (outcomes) depends on A (outcomes/settings). However, because the opposite is also possible, it seems difficult if not impossible to substantiate a claim of causality or even influence.

That said, I think the outcomes depend on the settings, because the correlation depends on the settings. So if one were to rule out 'an effect' (non-locality) one would have to stick with the outcomes depending on the local settings (like you seem to do?). One step further is to suggest that the outcomes might interdepend non-locally (of 'the other' settings), like I do. :smile:
 
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