Understanding which-way patterns in DCQE

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SUMMARY

The discussion centers on the phenomenon of which-way patterns in Double-Slit Quantum Electrodynamics (DCQE), specifically referencing Figure 3 from the paper by Walborn et al. (2003). It concludes that a single blob occurs when photons are detected in a cavity, indicating a particle-like behavior, while two blobs represent wave-like behavior when both slits are open. The conversation emphasizes the conditions under which these patterns manifest, highlighting the transition from wave to particle behavior in quantum mechanics.

PREREQUISITES
  • Understanding of Quantum Electrodynamics (QED)
  • Familiarity with the Double-Slit Experiment
  • Knowledge of photon behavior in quantum mechanics
  • Ability to interpret scientific diagrams and figures
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  • Research the implications of photon detection in quantum mechanics
  • Study the Double-Slit Experiment in detail
  • Explore the concept of wave-particle duality in quantum physics
  • Examine the experimental setups that demonstrate which-way information
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San K
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Figure 3 of the below shows 1 blob.

http://www.fsc.ufsc.br/~lucio/2003-07WalbornF.pdf


Other illustrations show 2 blobs...i.e. one for each slit.


When does 1 blob happen and when does two blobs happen?
 
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Figure 3 is just a thought experiment. Supposedly the photons no longer act like waves if they emit photons that are detected in the cavity and make a blob on the detector.

Where do you see 2 blobs at?
 

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