RE: Question about Quantum Eraser
August 31, 2016 at 7:49 pm
(This post was last modified: August 31, 2016 at 7:52 pm by bennyboy.)
Okay, if what you suspect is right, then that means you could, at least sometimes, infer whether a photon was acting as a particle or a wave from the resultant spread pattern. But I guess that's true anyway-- if you are engaged in an experiment, and I walk into the room after it's done, I assume I will be able to see a 2-stripe pattern, and say, "Aha! I know you were detecting activity at the slits!" If certain apparatus could also do this, then the results themselves might actually be useful.
My problem is that if you could do this experiment at very long range, it seems you could actually send information at a speed faster than light. You could, for example, send a burst of photons from the moon, and then use their entanglement with the transmitting apparatus to set their state just before they arrive at a receptor. Isn't this "illegal"?
If you want to trip me out, show me a 4-state superposition (essentially a uniform distribution, right?), that only resolves itself to me when I look up my random symbols in a book.
My problem is that if you could do this experiment at very long range, it seems you could actually send information at a speed faster than light. You could, for example, send a burst of photons from the moon, and then use their entanglement with the transmitting apparatus to set their state just before they arrive at a receptor. Isn't this "illegal"?
If you want to trip me out, show me a 4-state superposition (essentially a uniform distribution, right?), that only resolves itself to me when I look up my random symbols in a book.
