Evolution of Photons from Bell-States to Separable States

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SUMMARY

The discussion focuses on the evolution of photons from Bell-states to separable states, specifically referencing the paper "http://arxiv.org/ftp/arxiv/papers/1203/1203.4834.pdf". The authors assert that certain photon outputs are separable states regardless of the decision to perform a Bell-state measurement on photons #2 and #3. The conversation seeks a detailed explanation of the photon evolution process, particularly when converting to left (L) and right (R) polarization, akin to the analysis provided for Bell-states on page 14 of the referenced paper.

PREREQUISITES
  • Understanding of quantum mechanics principles, particularly photon behavior.
  • Familiarity with Bell-state measurements and their implications in quantum entanglement.
  • Knowledge of polarization states, specifically left (L) and right (R) polarization.
  • Ability to interpret academic papers in quantum physics, particularly those discussing photon evolution.
NEXT STEPS
  • Study the concepts of Bell-state measurements in quantum optics.
  • Research the mathematical framework for photon polarization transformations.
  • Examine the implications of separable states in quantum information theory.
  • Analyze the specific photon evolution examples provided in the referenced paper.
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Quantum physicists, researchers in quantum optics, and students studying quantum mechanics who are interested in the behavior of photons and their polarization states.

StevieTNZ
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Hi there,

I know in this article - http://arxiv.org/ftp/arxiv/papers/1203/1203.4834.pdf - the authors discard the clicks at H at output b" with V at output c" (and vice versa), saying they are seperable states regardless of whether the decision to perform a bell-state measurement on photons #2 and #3 is made or not.

I was wondering if someone who knows their stuff could write the evolution of the photons to get that above result (including for when the photons get converted into L and R polarisation)? similar to what they have for their evolution of the two bell-states they detect (on page 14).

Many thanks!
 
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