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Teleportation and quantum entanglement


Posted on Tuesday, 3 August, 2010 | Comment icon 41 comments | News tip by: Still Waters


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."

  View: Full article |  Source: NPR

  Discuss: View comments (41)

   


 
Recent comments on this story
Comment icon #32 Posted by sepulchrave on 9 August, 2010, 7:13
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... [More]
Comment icon #33 Posted by Power Lust on 9 August, 2010, 13:30
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 on 9 August, 2010, 13:33
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 on 9 August, 2010, 18:04
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 on 10 August, 2010, 3:08
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 on 10 August, 2010, 17:24
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 on 10 August, 2010, 20:19
Greed in that manner.
Comment icon #39 Posted by Resonance on 11 August, 2010, 0:26
***Edited***
Comment icon #40 Posted by Resonance on 11 August, 2010, 0:28
Again, for those of you who haven't researched the topic.... Harte is 100% correct. Yet, are you saying that an 'electron' isn't information, Harte?
Comment icon #41 Posted by sepulchrave on 11 August, 2010, 5:23
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. I doubt Harte is saying that an electron isn't information. He is probably saying an electron isn't quantum information.


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