uses a beam splitter crystal (BBO) to split one photon into two entangled photons

Does the interaction make it a wave or something, why is that important that they interact?

then by inducing a different polarization on the left and right slits, you can tell if the polarization matches and which path the photon took

because particles interact with themselves

thats what we mean when we say quantum particles act like waves

https://www.youtube.com/redirect?event=video_description&v=vOv8zYla1wY&q=http%3A%2F%2Fwww.univie.ac.at%2Fqfp%2Fpublications3%2Fpdffiles%2F1994-08.pdf&redir_token=YXUmr5A6cF9GN9ACnj29s5kBsWx8MTU3NjIxNTQ3NkAxNTc2MTI5MDc2&html_redirect=1 Paper on interaction free experiment

a single photon interacts with other versions of itself and this is responsible for most of the fundamental properties of light such as least action principle, snells law, inertia, etc

did this shift from god to QM

I'm just trying to follow

Feynman explains this all in a way that will blow your mind if you watch his QED video series

REEEE

consider light reflecting off a mirror, ever wonder why it always reflects at angle of incidence?

No

because that's the shortest path, and if you consider the contribution of all other paths, they create destructive interference

@Wan6Saber she'd get over powered and defiled in war

the only path without interference is the shortest path

@Deleted User wrong

She'll only get defiled in bed <a:zoom:496262340258299904>

there and the kitchen

are where she belongs

not on a battle field

They won't listen

snells law, the formula for determining the angle that light is bent by lenses/water/materials... its simple the light is just always taking the shortest path

but ask yourself, how does the light know the lens is there before it gets there?

it takes all paths

Ok, so there are two paths. The particle is detected in one. Why does interaction cause it to go through the other?

The beauty of the Jewish woman shall not perish from this earth

and all paths but the shortest path get destructive interference and are very unlikely to ever be observed

good analogy of snells law is pretend your friend is drowning in a river and you want to get to them as fast as you can....

Say both paths are the same length, ok. Will laser be detected in both, or will it be a wave?

the optimal route to take is to run most of the way since you're faster, then swim partway, but the path is going to look like this

that's the exact same path light takes... but how does it know the speed of light of the area up ahead before it gets there

Say both paths are the same length, ok. Will laser be detected in both detectors, each being equally likely?, or will it be a wave?

in which experiment Rhythm?

Mach–Zehnder Interferometer