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Science & Technology

Teleportation and quantum entanglement

By T.K. Randall
August 3, 2010 · Comment icon 41 comments

Image Credit: Paramount Pictures
Scientists are taking gradual steps towards the concept of teleportation via quantum entanglement.
For years science fiction has put forward the concept of teleporters capable of instantly transporting objects and people from one place to another, but how plausible is such a technology in real life ? Could we one day have Star Trek style teleporters ?
"Quantum entanglement" may sound like an awful sci-fi romance flick, but it's actually a phenomenon that physicists say may someday lead to the ability to teleport an object all the way across the galaxy instantly.


Source: NPR | Comments (41)




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Comment icon #32 Posted by sepulchrave 14 years ago
StarLord, Harte is still (basically) correct. What your link is referring to is using the entanglement to ensure a secure communication channel. Harte was pointing out that you can't use entanglement to send a message to someone else. Your article points out that you can use entangled particles to send a message in a classical manner. In other words: entangled particles do "communicate" with each other - the phase evolution of each component is linked. However we are not able to measure the individual state of each component (without breaking the entanglement), and therefore we cannot use this... [More]
Comment icon #33 Posted by Power Lust 14 years ago
So basically it's got absolutely nothing to do with teleporting. Why did they call it teleporting if it has nothing to do with it? It is you are teleporting one atoms state to another. Speed for example, atomic spin and the atoms position.
Comment icon #34 Posted by Power Lust 14 years ago
Harte, That might not be the case in regards to transmitting information through Quantum Entanglement. (We'll save teleporting for a later decade) In quantum cryptogoly you can tell if the encrption key has been read if the wavefunction has been collapsed. That is a way to send a signal. Someone at position A decides if he will read it or not and someone at position B finds out if its been read. Further more 1000 keys could be used to form a 1000 digit bit which is enought combinations to use as a message.
Comment icon #35 Posted by StarLord 14 years ago
In quantum cryptogoly you can tell if the encrption key has been read if the wavefunction has been collapsed. That is a way to send a signal. Someone at position A decides if he will read it or not and someone at position B finds out if its been read. Further more 1000 keys could be used to form a 1000 digit bit which is enought combinations to use as a message. And if you set up that "1,000 digit bit" to resemble binary code, could you not use it to send words like we see here, each different digital bit representing a different letter?
Comment icon #36 Posted by sepulchrave 14 years ago
And if you set up that "1,000 digit bit" to resemble binary code, could you not use it to send words like we see here, each different digital bit representing a different letter? No, because the person at B does not know what the original state of the "1000 digit bit" was. Unless he knows the specific state, his measurement will be at least partly randomized and it is unlikely he will recover the full message. If the person at B does know the original state, then there is no point in sending the message.
Comment icon #37 Posted by StarLord 14 years ago
How about the state of being either off, not sending or on, sending / ready to send on agreed upon space ? In other words, an agreed upon state -interval- that can be identified as "on" and another state that can be identified as "off", once the agreed upon state occurs, would not sending that 1000 digit bit then make sense?
Comment icon #38 Posted by Brakzar Break 14 years ago
Still, it's a lovely idea. If it could be done, then you could regularly get back ups of your pattern, maybe once a week or something. If you died, could paste the backup pattern onto a new material matrix, and then have a new you. But, unfortunately, this is really just a selfish thing, because it wouldn't REALLY be you. It'd be like birthing a fully grown new you, really just to help the living, not you at all. The original you, the older you, would still be dead, the new you would have the same memories and be identical in every way except in actually being you. Still, it is a kind of immor... [More]
Comment icon #39 Posted by Resonance 14 years ago
***Edited***
Comment icon #40 Posted by Resonance 14 years ago
There was one brief voice of reason in this thread that tried to explain to you all that this is not teleportation at all. Did you listen? No. You'd rather argue about what happens to the soul when you teleport, and blithely ignore that no teleportation is occuring. So sad. You cannot transmit information through quantum entanglement, hence you cannot teleport anything at all that way. So your "soul" is safe, assuming it was safe before this argument began - which I doubt for some of you. Harte Again, for those of you who haven't researched the topic.... Harte is 100% correct. Yet, are you say... [More]
Comment icon #41 Posted by sepulchrave 14 years ago
How about the state of being either off, not sending or on, sending / ready to send on agreed upon space ? In other words, an agreed upon state -interval- that can be identified as "on" and another state that can be identified as "off", once the agreed upon state occurs, would not sending that 1000 digit bit then make sense? Yes. You can send information that way. That is classical information, the same kind we use right now in phone lines, fiber optics, even smoke signals. Again, for those of you who haven't researched the topic.... Harte is 100% correct.Yet, are you saying that an 'electron'... [More]


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