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from the abstract > Intuition from our everyday lives gives rise to the belief that information exchanged between remote parties is carried by physical particl
by justifier 9y ago
from the abstract
> Intuition from our everyday lives gives rise to the belief that information exchanged between remote parties is carried by physical particles. Surprisingly, in a recent theoretical study .. quantum mechanics was found to allow for communication, even without the actual transmission of physical particles.
ok, does this also mean that communication is free from restraints that particles suffer.. as in would this allow faster than light communication?
- JshWright 9y agoThe speed of light isn't a property inherent to physical particles. It is far more fundamental than that. Check out the PBS Space Time channel. They have a number of excellent episodes on the speed of light, causality, etc...
- justifier 9y agoyeah, i'm sorry i should have been more clear what i am interested in is: i understand that solely utilising quantum entanglement, a ftl phenomenon, one is unable to communicate classical information but does this method utilise the zeno effect to afford this communication by controlling when to cease and reinstate the systems evolution? two parties with entangled particles within quantum systems agree on a baud rate and the transmitter alters the systems evolution until it takes on a desirable state then arrest the evolution until the next scheduled modulation, then evolve the state to the next desired expression, wait for the next modulation, and on and on effectively the information transfer would adhere to causality, the observer would be subject to the baud rate, but the distance traveled between the parties could be greater than one that light could travel within that baud rate
- ajkjk 9y agoEr. Quantum entanglement is not a faster than light phenomenon. Or, at least, describing it as such is rather pointless. It's no more 'faster than light' than 'realizing something about a faraway place' is.
- skygazer 9y agoIsn't collapse of the probability wave instantaneous across the arbitrary distance between entangled particles, from the frame of the measurement, in violation of relativity, and isn't that what Einstein disliked?
- gaze 9y agoThe wave function isn't really this thing that physically exists but is really a data structure which exists only in your head that captures the information you have about a quantum system. So yeah collapse is instantaneous, but that's just because you can update something in your head instantly because you learned something about something that happened far away.
- skygazer 9y agoI don't know that that's true. I'm by no means, even remotely, an expert. But it sounds like you've got a "hidden variables" take on it; that you're suggesting the probability wave is our statistical prediction of a systems state limited by our ignorance, which is what Einstein believed, and has been since contradicted by physical experiment showing violation of Bell's inequality? Am I mistaken? Feel free to correct me.
- gaze 9y agoAh that's not what I'm saying but it's subtle. Access to hidden variables, if they existed, would allow you to predict a measurement outcome. I'm not saying that. I'm saying the wave function is a tool that allows you to write down all the correlations. In other words, the wave function is a tool that allows you to reproduce all the probability distributions
- TheDauthi 9y agoIt has to have been possible for the information to have traveled between the parties normally. In this case, it has to have been possible that a photon would have traveled between the two. Since the information couldn't have arrived FTL normally due to the everyday causality problems, it also couldn't have passed through this channel FTL.