Viewing a single comment thread. View all comments

Plus_Cartoonist_3060 t1_j64mmjq wrote

Reply to comment by KamikazeArchon in Sending a signal faster than light is time travel? by KingOfTNT10

If you have two atoms in quantum entanglement, and you change the spin of one atom, the other atom will change it's spin to be opposite. Isn't this the essence of transmitting information?

1

KamikazeArchon t1_j64n3gf wrote

It would be if it were true. It's not. That's not what entanglement means. If you change the spin of one, nothing will happen to the other. Changing spin breaks entanglement.

2

Plus_Cartoonist_3060 t1_j653ciz wrote

Interesting I always thought it was true! Do you mind providing a source?

1

p4ort t1_j658mu0 wrote

I don’t think you understand QE.

Say I entangle 2 particles and send particle 2 an arbitrarily far distance away. Particle 1 is the one I measure, and I find out it’s spinning clockwise. I now instantly know that particle 2 is spinning counterclockwise. Until the person with particle 2 measures it they do not know it is spinning counterclockwise.

No information is transmitted, the interesting thing is being able to measure a particle that is not local to me.

If you were able to measure the particle AND alert your companion what the spin was instantly then you would have FTL information transfer.

3