Plus_Cartoonist_3060 t1_j64k5il wrote on January 27, 2023 at 5:45 PM

So far as we know, nothing can travel faster than the speed of light. However, a relatively new discovery/concept is called "Quantum Entanglement" in which two or more particles can become connected seemingly regardless of the space between them. In such a case, information could theoretically be transmitted instantaneously

KamikazeArchon t1_j64m4g9 wrote on January 27, 2023 at 5:57 PM

Quantum entanglement does not allow for the transmission of information, according to all experiments we've run.

Plus_Cartoonist_3060 t1_j64mmjq wrote on January 27, 2023 at 6:00 PM

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?

KamikazeArchon t1_j64n3gf wrote on January 27, 2023 at 6:03 PM

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.

Plus_Cartoonist_3060 t1_j653ciz wrote on January 27, 2023 at 7:45 PM

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

p4ort t1_j658mu0 wrote on January 27, 2023 at 8:19 PM

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.

p4ort t1_j658315 wrote on January 27, 2023 at 8:15 PM

No, information can not theoretically be transmitted instantaneously with quantum entanglement.