Quantum Eraser Lottery Challenge
Why Physics Stack Exchange recommends it
Physics Stack Exchange answerers and askers cite it as the popular source of the 'send information to the past with a quantum eraser' idea, often alongside the follow-up video that explains why it fails.
Recommended by 1 people across 1 different months, 2017 to 2021.
What it is
A short PBS Space Time episode in which host Matt O'Dowd sets up a thought experiment: use the delayed-choice quantum eraser to build a time-travel communication device and win the lottery. It ends with a challenge asking viewers why the signal arrives but the numbers cannot be read. It is the second part of a quantum eraser pair, with a follow-up video giving the answer.
What people said
Recommends Craig Gidney · 2017-12 · Physics Stack Exchange · on “Wheeler's delayed-choice experiment as a time machine?”
Here is a youtube video that gives a better explanation of your idea (which is an extremely common misconception): Quantum Eraser Lottery Challenge | Space Time | PBS Digital Studios [this video] . And here is the followup video where they explain why it doesn't work: [...] + Quantum Eraser Answer | Space Time | PBS Digital Studio [LINK] . If we leave the detector in place, but "turn it off", then [the pattern on the screen] goes back to an interference pattern (indicative of a wave) because there was no measurement observed. And every test of Wheeler seems to validate it. You're mixing up two different experiments. In the delayed choice experiment, you're not deciding whether or not to have a de
Cites Vepir · 2017-04 · Physics Stack Exchange · on “Delayed Choice Quantum Eraser?”
Note that I'm looking for a layman explanations for these layman ideas. Introduction Can someone help me understand why my idea wouldn't work? Explain the the Delayed Choice Quantum Eraser? First, I saw this interpretation of the experiment: Video I [LINK] (at $4:30$) Then, an idea of how to "cheat on lottery", by sending information to the past: Video II [this video] Then, explained why it would fail here: Video III [LINK] (at $4:00$) But I have another idea of how to try something like that. Theoretical Experiment - predict future Leave the board on the earth, and the detectors A & B on the moon. Let's say you can send the first pairs to the earth board and their pairs to the moon detectors. If
Cites Androniq · 2021-10 · Physics Stack Exchange · on “DCQE: is SPDC low rate fundamental?”
Preamble: I'm quite aware I've been duped by sci-pop videos and maybe the Wikipedia. I'm asking this question precisely in order to correct the Wikipedia article and to make my own video debunking the retrocausality in DCQE. I'm desperately trying to get at least a superficial glimpse of quantum mechanics from science popularization YouTube channels (and in some degree from Coursera), and I think there's one important bit of information about the delayed choice quantum eraser (DCQE) experiment missing in all of the descriptions, even on PBS Space Time and FermiLab. Namely, this is difference between the double-slit experiment with electrons (or atoms, or even whole molecules) where detection