Understanding which-way patterns in DCQE

  1. 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?
     
  2. jcsd
  3. Drakkith

    Staff: Mentor

    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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