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Would you use a transporter beam?
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<blockquote data-quote="freyar" data-source="post: 6659994" data-attributes="member: 40227"><p>Well, if I answered the question as originally posed, I don't think I'd do it. On the other hand, if it worked like in Star Trek, it could be very useful.</p><p></p><p>But I want to comment on the physics stuff....</p><p></p><p></p><p></p><p></p><p></p><p>As noted, it is impossible within quantum mechanics to <strong>duplicate</strong> (or <strong>clone</strong>, using the jargon) the state of a given system onto another system without messing up the state of the first one. In other words, you can't have the teleporter that creates the duplicate before getting rid of the first one. However, it is completely possible quantum mechanically to <strong>teleport</strong> a system (that's the technical term), meaning you can take one system and transfer its quantum state to another of the same kind of system at a distance. It's just that the first system's state gets jumbled up. This has also been done experimentally over a distance of almost 150 km (for photons). I think someone asked, so here's the answer: this physics is inextricably related to entanglement.</p><p></p><p>That's also a problem if you wanted to use quantum teleportation to actually teleport someone. The system you want to teleport has to be entangled from the start with the system at a distance (so it really works by setting up two systems at one place, then shipping one of them somewhere else in a normal way). I don't know how you would entangle a person with a set of exactly the same numbers of atoms, etc, but I imagine it would mess you up even before you get to the point where you want to destroy yourself to create the copy at a distance. Anyway, seems difficult.</p></blockquote><p></p>
[QUOTE="freyar, post: 6659994, member: 40227"] Well, if I answered the question as originally posed, I don't think I'd do it. On the other hand, if it worked like in Star Trek, it could be very useful. But I want to comment on the physics stuff.... As noted, it is impossible within quantum mechanics to [B]duplicate[/B] (or [B]clone[/B], using the jargon) the state of a given system onto another system without messing up the state of the first one. In other words, you can't have the teleporter that creates the duplicate before getting rid of the first one. However, it is completely possible quantum mechanically to [B]teleport[/B] a system (that's the technical term), meaning you can take one system and transfer its quantum state to another of the same kind of system at a distance. It's just that the first system's state gets jumbled up. This has also been done experimentally over a distance of almost 150 km (for photons). I think someone asked, so here's the answer: this physics is inextricably related to entanglement. That's also a problem if you wanted to use quantum teleportation to actually teleport someone. The system you want to teleport has to be entangled from the start with the system at a distance (so it really works by setting up two systems at one place, then shipping one of them somewhere else in a normal way). I don't know how you would entangle a person with a set of exactly the same numbers of atoms, etc, but I imagine it would mess you up even before you get to the point where you want to destroy yourself to create the copy at a distance. Anyway, seems difficult. [/QUOTE]
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