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Niels Bohr

Quantum teleportation achieved over ten miles of free space

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By Casey Johnston | Last updated about an hour ago

Quantum teleportation has achieved a new milestone or, should we say, a new ten-milestone: scientists have recently had success teleporting information between photons over a free space distance of nearly ten miles, an unprecedented length. The researchers who have accomplished this feat note that this brings us closer to communicating information without needing a traditional signal, and that the ten miles they have reached could span the distance between the surface of the earth and space.

As we've explained before, "quantum teleportation" is quite different from how many people imagine teleportation to work. Rather than picking one thing up and placing it somewhere else, quantum teleportation involves entangling two things, like photons or ions, and then moving the quantum state from one to the other.

When one of the items is sent a distance away, entanglement ensures that changing the state of one causes the other to change as well, allowing the teleportation of information, if not matter. However, the distance particles can be from each other has been limited so far to a number of meters.

Teleportation over distances of a few hundred meters has previously only been accomplished with the photons traveling in fiber channels to help preserve their state. In this particular experiment, researchers maximally entangled two photons using both spatial and polarization modes and sent the one with higher energy through a ten-mile-long free space channel. They found that the distant photon was still able to respond to changes in state of the photon they held onto even at this unprecedented distance.

However, the long-distance teleportation of a photon is only a small step towards developing applications for the procedure. While photons are good at transmitting information, they are not as good as ions at allowing manipulation, an advancement we'd need for encryption. Researchers were also able to maintain the fidelity of the long-distance teleportation at 89 percent— decent enough for information, but still dangerous for the whole-body human teleportation that we're all looking forward to.

Science, 2010. DOI: 10.1038/NPHOTON.2010.87 (About DOIs).


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Filed: Citizen (apr) Country: Brazil
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fire the photon torpedoes, connie.


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I'll believe it when I see a half human half fly walking around amongst us. Until then it's all pie in the sky.


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How about an unshaven Jeff Goldblum?
That's just icing on the cake.

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27-DEC-2016 -:- N400 form delivered/picked up by USCIS

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04-JAN-2017 -:- N400 form received per NOA1

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30-JAN-2017 -:- N400 fingerprint taken

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I need more coffee to be able to read the whole article without my mind melting...but yeah sounds cool.

If I IM you, instead of seeing my message 0.001 seconds after I hit enter, you will see it 0.00000001 seconds after I hit enter. Hopefully you find a productive use of the extra 0.00099999 seconds, because that is now time you have that you didn't have before.


Man is made by his belief. As he believes, so he is.

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Filed: Lift. Cond. (apr) Country: Egypt
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Your mind can not melt that quickly, unless of course you use quantum melting technologies.

:lol:


Don't just open your mouth and prove yourself a fool....put it in writing.

It gets harder the more you know. Because the more you find out, the uglier everything seems.

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