![]() ![]() Entanglement can also help transmit encyclopedias' worth of information from one place to another using only a few atoms, a protocol called quantum teleportation. Physicists have figured out how to use entanglement to encrypt messages in uncrackable codes and build ultrafast computers. ![]() Make a measurement on one member of an entangled pair, and the other changes immediately. One particle always "knows" what the other is doing. In ordinary entanglement, two particles (usually electrons or photons) are so intimately bound that they share one quantum state - spin, momentum and a host of other variables - between them.
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