Has it been proven to exchange information using this or is it simply the quantum entanglement? I thought quantum entanglement could be separated by light years and do the same collapse at the exact same time but that no useful information could be sent via this.
This particular experiment was a test of the Bell inequalities, so it didn’t attempt any information transfer. But quantum entanglement can be used to communicate information into two senses. First, it can transfer quantum information, such as a superposition state, which can’t be done through ordinary channels without collapsing the state; this is quantum “teleportation.” Second, it can augment classical communication by, for example, allowing more information to be packed (“dense” or “superdense” coding). Neither of these allows information to be sent faster than light, but both are still very useful.
I didnt know this was done with qbits, but i thought i heard that china had launched a satellite with one half of an entangled partical pair and confirmed that changing one changed the other instantanously.
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