Timeline for Why can't photons cancel each other?
Current License: CC BY-SA 4.0
14 events
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| Sep 21, 2021 at 9:48 | comment | added | Andrey Lebedenko | If a single photon can "cancel" itself (at least partially) during the two-slits experiment, then why two identical in all properties photons can not do so? | |
| Aug 10, 2020 at 10:39 | answer | added | Deschele Schilder | timeline score: 0 | |
| Aug 10, 2020 at 10:15 | history | edited | Deschele Schilder | CC BY-SA 4.0 |
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| Aug 10, 2020 at 9:53 | answer | added | my2cts | timeline score: 1 | |
| Aug 8, 2020 at 6:00 | history | tweeted | twitter.com/StackPhysics/status/1291977456472162306 | ||
| Aug 7, 2020 at 19:20 | answer | added | anna v | timeline score: 2 | |
| Aug 7, 2020 at 17:47 | history | edited | Qmechanic♦ |
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| Aug 7, 2020 at 16:56 | answer | added | Gonenc | timeline score: 2 | |
| Aug 7, 2020 at 16:04 | comment | added | The Photon | @Tfovid, But the beamsplitter has two "outputs". If there is destructive interference at one output ($+\hat{x}$, say), there will be constructive interference at the other ($-\hat{y}$). | |
| Aug 7, 2020 at 16:00 | comment | added | Tfovid | @ThePhoton I may not have examples from classical mechanics, but from quantum optics, I'd use a beam splitter placed, say, at the origin of two orthogonal axes $\hat{x}$ and $\hat{y}$. Let's say I send in two photons, one from from the top and towards $-\hat{y}$ and one from the left towards $+\hat{x}$. With the appropriate phase difference, if the two photons are generated from the same source (e.g., a GHZ state), they should cancel out ½ of the time as they "emerge" from the other side of the beam splitter. | |
| Aug 7, 2020 at 15:39 | answer | added | Charles Francis | timeline score: -1 | |
| Aug 7, 2020 at 15:31 | comment | added | The Photon | Typically when two waves cancel each other by destructive interference, they only do that in a limited area or region of space. In some other location there will be constructive interference and the two waves will reinforce each other rather than cancelling. Can you show a specific scenario where waves cancel everywhere in acoustics or mechanics? | |
| Aug 7, 2020 at 15:27 | comment | added | Charlie | Electromagnetic waves and sound/water waves resemble each other slightly in their behaviour but they are fundamentally different things and can't be compared in the way you're trying to compare them. | |
| Aug 7, 2020 at 15:12 | history | asked | Tfovid | CC BY-SA 4.0 |