Barandes's Unistochastic Refomulation Applied to Entanglement Swapping

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Discussion Overview

The discussion revolves around the application of Barandes's unistochastic reformulation to the phenomenon of entanglement swapping involving four particles and three observers. Participants explore the theoretical framework and experimental setup, focusing on the implications of causal locality and the measurement outcomes in entangled systems.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant outlines a scenario involving particles Q, R, S, and T, detailing the measurements made by observers A, B, and C, and introduces the concept of divisible events in the context of entanglement swapping.
  • Another participant expresses a desire for a more concrete understanding of the experiment, suggesting specific measurement setups and outcomes to clarify potential disagreements regarding Barandes's principle of causal locality.
  • Specific measurement conditions are proposed, including the use of polarizers and beam splitters to determine the outcomes of photons Q and T, with expectations set for the functions f(BSM) and f(SSM) based on the success of the Bell State Measurement versus the Separable State Measurement.
  • Discussion includes the necessity for indistinguishability of photons R and S for a successful swap to occur, emphasizing that distinguishable states would lead to different measurement outcomes.
  • Participants note the importance of coincidence counting in the experimental setup to validate the entangled states and the implications of the measurement results on the understanding of causal relations.

Areas of Agreement / Disagreement

Participants express differing views on the interpretation of the experimental setup and the implications of the measurement outcomes, particularly regarding the violation of causal locality. There is no consensus on whether the proposed setups will definitively demonstrate the expected results or if they will lead to alternative interpretations.

Contextual Notes

The discussion highlights potential limitations in the experimental design, such as the dependence on the indistinguishability of photons and the specific measurement settings. Unresolved assumptions regarding the nature of causal influences and the interpretation of measurement outcomes are also noted.

  • #61
Morbert said:
I don't know if there are any use over and above standard QM yet. He has remarked that some of his colleagues. Barandes speculates on some possibilities in the timestamp below, but ultimately it is all speculative for now.

[edit] - Fixed timestamp

I know he also said that he is working in a draft of an example calculation, I'm waiting for that...
 
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