Exploring the Possibilities of Quantum Communication Beyond the Speed of Light

In summary, the conversation revolves around the possibility of communication faster than the speed of light through the use of wormholes and quantum tunneling. However, there are conflicting views on whether wormholes even exist and if they do, whether they can be used for communication. Some believe that wormholes are singularities and our current mathematical understanding is not sufficient to explain them. Others argue that trying to explain weird phenomena can be difficult and that not everything in nature is strange. Ultimately, the concept remains highly speculative and the possibility of faster-than-light communication through wormholes is still up for debate.
  • #1
leonstavros
78
0
In a previous post I discussed the idea of an intelligent universe but realized from your responses that communication faster than the speed of light is impossible. I got to thinking about that and thought what about worm holes. Worm holes can pass information across the universe faster than the speed of light. Then I thought can quantum tunneling be used to pass information across the universe. If information can pass through tiny worm holes into other parts of the universe then there is communication faster then the speed of light.

Tell me where I'm wrong.
 
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  • #2
I know absolutely nothing about this topic, but it seems that there is a shift in instances. Like one instant it is here, and the next it is very far away. Its not like the speed of that object or information ever exceeded the speed of light, i view it as more of a teleportation type of thing.
 
  • #3
I don't think worm holes allow for things to move faster than the speed of light, it connects regions of space that are far apart on a linear (curved) scale to be in close proximity to one another, like a short cut. Something like this:

http://img299.imageshack.us/img299/9432/24674506.jpg [Broken]

Thus, in this example, it should take 3 light years to go from point A to point B following the blue line which is the predicted path based on space curvature. If a worm hole is available, it will take only 1 light year (as an example). Thus, one may think that information was violated because the observer at Point B assumed that information traveled at three times the speed of light (3C). But in reality, it travel at the speed of light through a short cut giving only the impression to the observer that it traveled at 3C.
 
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  • #4
magnusrobot12 said:
I don't think worm holes allow for things to move faster than the speed of light, it connects regions of space that are far apart on a linear (curved) scale to be in close proximity to one another, like a short cut. Something like this:

http://img299.imageshack.us/img299/9432/24674506.jpg [Broken]

Thus, in this example, it should take 3 light years to go from point A to point B following the blue line which is the predicted path based on space curvature. If a worm hole is available, it will take only 1 light year (as an example). Thus, one may think that information was violated because the observer at Point B assumed that information traveled at three times the speed of light (3C). But in reality, it travel at the speed of light through a short cut giving only the impression to the observer that it traveled at 3C.

But aren't worm holes singularities? What are the rules for the speed of light in a singularity?
 
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  • #5
i thought they were short cuts through spacetime, not singularities.
 
  • #6
leonstavros said:
But aren't worm holes singularities? What are the rules for the speed of light in a singularity?

I'm not positive if a worm hole is or isn't a singularity, but it wouldn't matter in any case. A singularity in this context is a break down of mathematical formula that leads to non-defined behavior.. It does not say anything about a worm hole per se, but rather our mathematical understanding of one. The idea being that we would one day have a more complete formula that would lead to a non-singularity based understanding of a worm hole (or the big bang, or a black hole, etc).

In other words, a singularity is more a lack of information as opposed to a defined idea, and since our math breaks down at this point it would be quite difficult to discuss the speed of light under those circumstances.
 
  • #7
leonstavros said:
Worm holes can pass information across the universe faster than the speed of light.

Assuming they exist. It's quite possible that wormholes can't exist in the universe.

Then I thought can quantum tunneling be used to pass information across the universe.

No it can't. It turns out that whenever someone thinks of some clever way of passing information through quantum tunnelling, it turns out not to work.

If information can pass through tiny worm holes into other parts of the universe then there is communication faster then the speed of light. Tell me where I'm wrong.

*If* :-) :-) :-)
 
  • #8
I understand that my hypothesis is highly speculative. I'm just merging the Einstein-Rosen tunnel theory and quantum weirdness and proposing a space-time fabric with tiny tunnels to other parts of the universe. Who knows how weird nature is?

Here's something more weird, is it possible that gravity is so weak because it "leaks" through all those tiny tunnels?
 
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  • #9
Don’t try to out-weird me, three eyes. I get weirder things than you in my breakfast cereal. – Zaphod Beeblebrox, H2G2.

leonstavros said:
I understand that my hypothesis is highly speculative. I'm just merging the Einstein-Rosen tunnel theory and quantum weirdness and proposing a space-time fabric with tiny tunnels to other parts of the universe.

People have thought of doing this before. The trouble is that you don't get anything useful out of it. One problem is that in order to replicate the experimental results, you have to assume that there is a wormhole between every particle in the universe and every other particle in the universe.

Also there is no such thing as "wormhole theory." Whether space-time tunnels are even *possible* is an active area of mathematical research. No one has come up with a usable tunnel, while at the same time no one has come up with a mathematical proof that usable wormholes are impossible.

One big. big problem in explaining weirdness is explaining *non weirdness*. Trying to explain why we aren't getting messages from the future and coming up with a physical theory in which you *don't* constantly see weird things turns out to be non-trivial.

Who knows how weird nature is?

The trouble with weird explanations is that not everything is weird. Whether it's possible or not to send messages back in time under extreme situations is unknown, but what is obvious is that it's not possible to *routinely* send messages back in time or faster than light. It's pretty easy to come up with a weird theory. It's really, really difficult to come up with a theory that doesn't cause total weirdness, and is "non-weird" when it has to be.

Here's something more weird, is it possible that gravity is so weak because it "leaks" through all those tiny tunnels?

Yes it's possible. Lot's of things are possible. But to go from a possibility to an argument that people will accept is hard. You not only have to show that it's *possible* but also that it happens.

Also one problem with trying to come up with weird theories, is that it's quite difficult to come up with an *original* weird theory. For example the idea that gravity is weak because it leaks through tunnels in space-time isn't particularly original. One idea is that gravity is weak because it interacts through higher dimensions

http://arxiv.org/abs/hep--ph/9811291

The hard part isn't coming up with the weird idea, but coming up with a way of testing that idea. In the case of extra dimensions, it means that if you hit two particles at each other real hard, some of the energy will go into the extra dimensions creating a particle jet.
 

1. What is quantum communication?

Quantum communication is a method of transmitting information using the principles of quantum mechanics. It involves the use of quantum particles, such as photons, to encode and transmit data. Unlike traditional communication methods, quantum communication offers the ability for secure and faster transmission of information.

2. How does quantum communication work?

Quantum communication relies on the principles of quantum entanglement and superposition. Entanglement is the phenomenon where two particles become connected and share a quantum state, meaning that any changes in one particle will be reflected in the other. Superposition is the idea that a quantum particle can exist in multiple states simultaneously. By utilizing these principles, quantum communication can achieve secure and faster transmission of information.

3. How is quantum communication different from traditional communication methods?

Traditional communication methods, such as radio waves or fiber optics, rely on sending signals through a physical medium. However, quantum communication uses quantum particles to transmit information, allowing for faster and more secure communication. Additionally, traditional communication methods are limited by the speed of light, whereas quantum communication can potentially exceed this speed limit.

4. What are the potential applications of quantum communication beyond the speed of light?

Quantum communication beyond the speed of light could have a wide range of applications, including faster and more secure communication in fields such as finance, defense, and healthcare. It could also revolutionize long-distance communication and potentially lead to advancements in quantum computing and teleportation.

5. What are the current challenges in exploring the possibilities of quantum communication beyond the speed of light?

One of the main challenges in exploring quantum communication beyond the speed of light is developing the technology and infrastructure to support it. This includes developing reliable quantum networks and finding ways to overcome the limitations of quantum particles, such as their susceptibility to interference and decoherence. It also requires significant advancements in our understanding of quantum mechanics and the ability to control and manipulate quantum particles effectively.

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