Physicists Discover How To Teleport Energy

MikeChino writes "A physicist at Tohoku University in Japan has figured out how to teleport energy from one point in the universe to another. The technique is based upon prior research that shows it's possible to teleport information from one location to another, and involves making a measurement on each [of] an entangled pair of particles. The measurement on the first particle injects quantum energy into the system, and then by carefully choosing the measurement to do so on the second particle, it is possible to extract the original energy. Heady stuff, but essentially it means that you can inject energy at one point in the universe and extract it from somewhere else without changing the energy of the system as a whole."

Comments

Consistent Histories?

[slifox]

How would an experiment like this be interpreted using the consistent histories theory?

For a classic entanglement "teleportation" scenario where a measurement on one particle could cause information to be "teleported" to the state of the other particle, I think the consistent histories interpretation of quantum mechanics says that the second particle was always in the same state until it was measured, and that no information was exchanged.

http://en.wikipedia.org/wiki/Consistent_histories

On another note, is there a way to test if this is correct?
Are there direct practical applications for this, if it is correct?

Re:Consistent Histories?

[InfiniteLoopCounter]

So the idea here is apparently that the energy itself can be transmitted instantly, but you can't actually transmit information this way. Just energy.

No, energy can't be transmitted instantly... you apparently still need the classical channel in order to know what measurement to perform in the receiving end, just like in good old quantum teleportation.

Yes. However, that is for one measurement. To really know what speed you are limited to before you can get surplus energy out on one end (eaten on the other of course), you also need to know how many possibilities there are for measurement, and how much energy you would lose in measuring the "wrong" variable.

For instance, you could set up, say 100 such entanglements in parallel and then measure at random whether some spin is up or down at some time of some particle or whatever would be necessary at random. Chances maybe good that you get the extra energy out on, say 2 of these 10 measurements and end up coming out on top. If this were possible, you might be able to beat the classical channel speed limit all together (albeit with somewhat diminished output) over large distances.

Wow....

[Cheerio Boy]

If you can inject enough energy into the process this could in theory be the replacement for batteries. This is provided you could make a giant transmitter that sends to the receiving devices. (Or possibly battery replacement modules?)

This is provided the technology isn't only "ten years away" or so. ;-)