Quantum teleportation of macroscopic objects

[xts]

Of course, we have a 'startrek-like' teleportation!
My bank offers automated money transfer service: I put some notes into ATM (they vanish there), and then the recipient peeks identical notes from other ATM enywhere else in Euro lands. Probably that's not a perfect teleportation (notes are likely to have different serial numbers), but their deep meaning (50.€) remains the same. Probably if ATM would be able to dispense coins, the teleportation would be the same, as startrek one.

 

[Drakkith]

Of course, we have a 'startrek-like' teleportation!
My bank offers automated money transfer service: I put some notes into ATM (they vanish there), and then the recipient peeks identical notes from other ATM enywhere else in Euro lands. Probably that's not a perfect teleportation (notes are likely to have different serial numbers), but their deep meaning (50.€) remains the same. Probably if ATM would be able to dispense coins, the teleportation would be the same, as startrek one.

I hate to break it to you, but that isn't teleportation in the least.

 

[Russellbacica]

Teleportation from one place to another is not possible unless the start and end are connected by wires like a fax because you have to strip the object into electrons then reconstruct it at the other end.

 

[Russellbacica]

Quantum teleportation is fine for photons and atoms, since there are not many parameters needed to define the state.
But for a human there are an incredibly huge number of parameters. So to quantum teleport a human, you would have to couple an incredibly huge number of particle pairs.
Also, in quantum teleportation, the original human would be destroyed (since it is not possible to make an exact replica of a quantum state without affecting the original quantum state).
Also, since a classical communication of the outcome of a Bell state measurement must be done, the quantum teleportation can only be completed at the speed of light or less.

To answer "what if a body was converted to energy and beamed to a destination": Well, the only kind of teleportation that has been done is quantum teleportation. So if you were thinking of inventing non-quantum teleportation, you'd need to come up with some other method. (The only other way I can think of is via some kind of wormhole due to the laws of general relativity).

In any case, either of these methods for teleporting a human are way off in the future (if they are even possible at all).

its possible to travel via worm holes but you can't travel place to place
you can only travel into the multiverse sort of like time travel:)

 

[BruceW]

its possible to travel via worm holes but you can't travel place to place
you can only travel into the multiverse sort of like time travel:)

It sounds like you are saying that whenever you go through a wormhole, you would create a parallel universe (which is common in films). But this has nothing to do with general relativity.

In general relativity, spacetime is curved so that although you can't locally exceed the speed of light, you can get to someplace quicker than a beam of light by using a different path through spacetime than that beam of light (i.e. a wormhole).

It is also theoretically possible to make a wormhole such that you can end up in the same place, but at an earlier time than you set off (which seems to mess with causality, but still it is theoretically possible).

Edit: sorry its off-topic, since its not quantum teleportation

 

[hammertime]

So, as we all know, scientists at CERN recently found that some neutrinos APPEAR to travel a bit faster than the speed of light. If it turns out not to be correct, and that relativity has been violated, would this move us any closer to macroscopic teleportation, either classical or quantum? Would it make technologies like it possible?

 

[Drakkith]

According to current QM, I don't think so. Quantum Teleportation doesn't teleport an object, it teleports the "states" of an object. Teleporting an actual object would probably be called a different effect. (Just my guess though)

 

[BruceW]

So, as we all know, scientists at CERN recently found that some neutrinos APPEAR to travel a bit faster than the speed of light. If it turns out not to be correct, and that relativity has been violated, would this move us any closer to macroscopic teleportation, either classical or quantum? Would it make technologies like it possible?

Its an interesting result. I would bet that actually the neutrinos didn't travel faster than the speed of light, due to some part of the experimental set-up that they didn't take into consideration.

But if they really did travel faster than the speed of light, then its a pretty huge discovery.

 

[hammertime]

But if the recent developments at CERN end up being true (i.e. it turns out that something CAN travel faster than light), then what's to stop us from communicating faster than the speed of light? All this time I've heard that one of the limitations of QT is that information can't be transmitted faster than light. Could this prove that wrong?

Also, if it turns out that the speed-of-light-limit is false, then could that also mean that other barriers to teleportation of macroscopic objects could also prove to be surmountable?

How long before we find violations of the HUP or the second law of thermodynamics? Those are considered fundamental limitations, too, just like the speed of light may have been.

 

[Drakkith]

Hammertime, let's not speculate on something that has yet to be proven, let alone things which blatantly violate the current laws of science.

 

[BruceW]

Its sometimes good to speculate a little bit.
For example in this case, we speculate "what if the results are true, then that would mean all kinds of crazy things for physics" So by speculating this, we think "maybe the results were wrong for some reason", so then we get others to check our results to see if they were right or not.

 

[ZapperZ]

Please confine the discussion to the topic based on current accepted evidence. Do not invoke the OPERA result in here. All discussion involving that experiment must be confined only to the single thread on that topic.

Zz.

 

[MarcoD]

As far as I know, quantum 'teleportation' is just terminology. There is nothing being teleported in the sense a layman would understand it. It's just a term which is used to spice up an otherwise 'boring' experiment.

http://en.wikipedia.org/wiki/Quantum_teleportation"

 

[BruceW]

Well, the entire state of the thing being teleported is transferred from one place to another by using the principle of entanglement. So there really is true teleportation as a layman would understand.

 

[MarcoD]

Well, the entire state of the thing being teleported is transferred from one place to another by using the principle of entanglement. So there really is true teleportation as a layman would understand.

Well. From my very limited understanding of the explanation on the Wikipedia page, I would just call it transportation.

 

[hammertime]

Can we expect the discovery of the Higgs boson to bring us any closer to teleportation?

 

[Drakkith]

Can we expect the discovery of the Higgs boson to bring us any closer to teleportation?

I don't believe so.

 

[hammertime]

The challenge that there is no known mechanism by which this is possible. You might as well ask "what barriers exist to magic?" If you convert a human body to energy (and how you would achieve total mass-to-energy is a big question) you now just have a huge explosion to deal with. Put it this way, if I explode a nuclear bomb in one direction towards you, how exactly are you going to absorb the explosion and turn it back into a nuclear bomb?

It also violates some fairy fundamental physics, namely the fictional technology somehow maps (perfectly and without interfering) the properties of every particle of the object being transported. This obviously violates the HUP.

I thought QT let's us work around the HUP.

By the way, Ryan_m_b, do you have any formal training in physics, quantum mechanics, or quantum computation? For the record, I don't.

I'm not trying to be rude or offensive. It's just that I noticed that, in your profile, it says that your interests are in nanotechnology and regenerative medicine, yet you're providing feedback on subject that has nothing to do with either of those topics.

 

[Ryan_m_b]

I thought QT let's us work around the HUP.

No, the uncertainty principle is a fundamental principle of quantum physics.

By the way, Ryan_m_b, do you have any formal training in physics, quantum mechanics, or quantum computation? For the record, I don't.

I'm not trying to be rude or offensive. It's just that I noticed that, in your profile, it says that your interests are in nanotechnology and regenerative medicine, yet you're providing feedback on subject that has nothing to do with either of those topics.

I have a BSc in biology and an MSc in nanotechnology and regenerative medicine. Any feedback I give outside of those areas is a consequence of self directed learning, that's a common thing on this forum.