Quantum Eraser experiment reproduced at home

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The discussion centers on a home reproduction of the Quantum Eraser experiment, utilizing a red laser pointer, polarized film, and a thin wire. The experiment demonstrates quantum weirdness through the manipulation of light patterns, showcasing both collapsed and restored diffraction patterns. Initial photos of the setup and results are shared, with the author indicating a need for further elaboration on the steps involved. The author expresses satisfaction with the initial results and plans to provide more detailed explanations in future updates. Feedback from the community is welcomed to enhance motivation and clarity in the presentation.
fizixfan
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I'm just posting the bare bones of this experiment to begin with, as it was quite the task just to attach all the photos in the proper order. But this is about quantum weirdness, and how it can be demonstrated at home with polarized film, a straight piece of thin wire, and a red laser pointer. It's based on an article in Scientific American from April 14, 2007 called "A Do-It-Yourself Quantum Eraser." I think I've done this properly and I'm fairly satisfied with the results.

I will elaborate on this in the near future. For now, I hope the pictures can speak for themselves.

DSC_1889_Apparatus_single_wire_diffraction_combined_50_1232x816.jpg

Figure 1. Apparatus (red laser pointer, single wire only without path labeler, & diffraction pattern on wall)

DSC_1886_Diffraction pattern with single wire.jpg

Figure 2. Close-up of diffraction pattern on wall from laser beam passing through single wire.

DSC_1834_Apparatus_with_path_labeler_and_collapsed_interference_pattern_50 - Copy.jpg

Figure 3. Apparatus with path labeler and collapsed diffraction pattern on wall.

DSC_1854_Interference_collapsed_by_H-V_path_labeler.jpg

Figure 4. Close-up of collapsed diffraction pattern on wall after passing through path labeler.

DSC_1864_Apparatus_with_analyzer_and_eraser_50.jpg

Figure 5. Apparatus with path labeler and analyzer with restored interference pattern on wall.

DSC_1826_Diffraction_pattern_restored_with_eraser.jpg

Figure 6. Close-up of restored diffraction pattern on wall after passing through path labeler and analyzer.
 
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For me, the pictures do not speak for themselves ... some elaboration at each step is required.
 
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UltrafastPED said:
For me, the pictures do not speak for themselves ... some elaboration at each step is required.

Yes, you're right. I will soon be editing this post to explain in greater detail what is happening at each step. I hope it's okay to post a "work in progress" in this forum. Bear with me, I'm new here, and I do appreciate your feedback. It keeps me motivated!
 
Here is a photo of the apparatus used in this experiment - a thin wire with orthogonal polarizers on either side ("path labeler"), polarized film ("analyzer") rotated at 45°relative to the path labeler, and a red laser pointer. I would have included this in the first post, but I could only upload six attachments.

DSC_1902_Quantum_eraser_apparatus.jpg
 
I am slowly going through the book 'What Is a Quantum Field Theory?' by Michel Talagrand. I came across the following quote: One does not" prove” the basic principles of Quantum Mechanics. The ultimate test for a model is the agreement of its predictions with experiments. Although it may seem trite, it does fit in with my modelling view of QM. The more I think about it, the more I believe it could be saying something quite profound. For example, precisely what is the justification of...

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