Recent content by protag0ras

I have a very fundamental question about interference and quarter-wave-plates. My setup contains only few elements: lightsource, QWPs, double slit and some detectors to see the interference pattern. (Detectors are missing from the bottom of the figure.) An important thing is that the two QWPs...

Cthugha, really thanks for the answer, that was the point! I was thinking about this puzzle over weeks. You are really welcome! Please let me ask again I think it will be ease for you. What is the point of the similar pi shift in the Walborn experiment...

Thank you very much, Cthugha. I will think about your answer... it is not clear yet to me. Here is the experimental setup of Kim: http://en.wikipedia.org/wiki/Delayed_choice_quantum_eraser I can't see any constraint to be a phase difference between the photons arrived into D1 and D2. This...

Dear All, I have question about the quantum eraser. I found two quantum eraser experiment with the same effect: http://arxiv.org/pdf/quant-ph/0106078v1.pdf http://en.wikipedia.org/wiki/Delayed_choice_quantum_eraser The effect is: seeing the two interference patterns they are contrary. The sum...

I have got one thing that I can not understand. I found that in a single slit expirement we got a Gaussian distribution with the highest intensity "I". I read in the theory that If we open an other slit then the highest intensity of the interference pattern will be 4*I. Now I try to use this...

I found a fairly good guide: http://web.mit.edu/8.02t/www/802TEAL3D/visualizations/coursenotes/modules/guide14.pdf Based on this I try to calculate the answers. Thanks again for the help.

Thank you very much for your helpful answers. Your discussion about the distance between the light source and the slits is OK for me. But originally I asked if we always see Gauss distribution while the QWPs at the slits are used. So in this case the interference could not appear regardless of...

Cthugha, thank you very much for your answer. Let me summerize to check if I see the essence. In the experiment with a fixed geometry (slits' distance, slits' width, wavelength etc.) we always see the same distribution in Ds regardless of using or not using the POL1 eraser. The interference...

I found other threads with the same title on this forum but my question is somehow differ. I think this was the most simple DCQE with double slits: http://arxiv.org/pdf/quant-ph/0106078v1.pdf For a short summary: the experimental setup uses an entangled pair of photons (p and s). The s-photons...