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European Researchers Propose Quantum Network Between Earth and ISS
New kalalau_kane writes with this tidbit from Extreme Tech: "A group of European researchers has proposed the largest quantum network yet: Between Earth and the International Space Station. Such a network would see entangled photons transmitted over a distance of 250 miles — two or three times greater than previous quantum communication experiments. Not only will this be the first quantum experiment in space, but it will allow the scientists to see if entanglement really is instantaneous over long distances, and whether it's affected by gravity."
The proposal (licensed CC BY).
actually it comes from this article:
http://www.extremetech.com/extreme/150207-chinese-physicists-measure-speed-of-einsteins-spooky-action-at-a-distance-at-least-10000-times-faster-than-light
Sometimes it's better not having signature
Enders Game
Basic explanation. So I have two entangled particles, and we move them apart so you have one and I have one. At this point we have no idea what the spin on either of them is, in fact it is not determined till we try and measure it, but they must be different. I now measure the spin on mine and find it is +1, meaning yours is -1 "instantly". You can now measure the spin on yours to confirm that.
The problem is because the spin of the particle is undetermined until I read it and when I do read it the result will be random, there is no way to transmit any useful information.
Rocannon's World by Ursula K. Le Guin
Space game using normal deck of cards: http://BattleCards.org
Not yet. anyway. Someone will borrow another sci fi concept and magically make it work.
No they won't. There is a certain cult that treats science as a religion and refuses to understand that there are basic laws of physics that constrain us. FTL communication causes a litany of paradoxes and trying to turn quantum entanglement into a FTL communication device shows a fundamental lack of understanding of what is going on.
See my journal for slashdot ID's by year. Mine created in 2005. http://slashdot.org/journal/289875/slashdot-ids-by-year
>It is instantaneous
Correction: current theory postulates that it is instantaneous, but theory can only be known to be accurate to within the limit of our measuring devices, so "at least 10,000 times faster than light" is the more accurate statement. The whole point of the ISS experiment will be to see if the addition of more potentially confounding factors causes the measured reality to depart from the predicted behavior.
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