The Delayed Choice Quantum Eraser, Debunked

What people said

TxFkdZ · 2026-07 · Recommendation

>The delayed-choice quantum eraser wasn’t carried out experimentally until 1999, so I think it’s a bit misleading to say this is what makes the double-slit experiment (first carried out with matter in 1927) so weird. I think Sabine is right, the weirdest thing in the quantum eraser experiment is still the FTL update of the wavefunction. She has a nice video on delayed-choice quantum eraser: [VIDEO]

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wruza · 2025-03 · Recommendation

I think Sabine explained this social effect few years ago. I know she's a little controversial, but the key thing in the video (as opposed to all other videos about DSE on the internet) was that you don't get "two clusters" actually. They are both statistical parts of a single [non-]interference pattern. "||" is a lie. I'm not in a physics rebel camp and don't prefer Sabine either, but after that I sort of lost trust in the interpretations that can't even get the resulting picture right. I even suspect that showing dumbed results amplifies "wow" effect and monetizes better. [VIDEO] This is the video if you're interested. Again, I'm no physicist and don't know if explanations are legit or statistically correct. But that little || trick that all other popsci videos play on you, that's a true concern.

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calny · 2025-02 · Recommendation

PBS Spacetime did an interesting video on DCQE, but it tripped me up trying to fully understand what was happening: [LINK] ... Later Sabine Hossenfelder did a video debunking the proposition that DCQE somehow showed that the past was being rewritten. [VIDEO] And Matt from PBS Spacetime acknowledged she was right in this respectful comment: > Sabine, this is amazing. You are, as usual, 100% right. The delayed choice quantum eraser is a prime example of over-mystification of quantum mechanics, even WITHIN the field of quantum mechanics! I (Matt) was guilty of embracing the quantum woo in that episode 5 years ago. Since then I've obsessed over this family of experiments and my thinking shifted quite a bit.

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