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by dbqpdb
2505 days ago
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This is correct, but this also doesn't really capture how significant and incredible of a feat quantum teleportation is. If we have a system in a quantum state A, it is 100% impossible to actually determine A with any precision. The best you can do is say that when you inspect A, you get will get this collection of classical outcomes with these probabilities. The state A itself, while arguably quite real, is fundamentally unknowable. However we can move this state A from particle to particle or system to system, with theoretically absolute fidelity. This is quantum teleportation. It really is quite incredible. This thing that you can't know can be moved around. This is kind of philosophically non-trivial. Theres a pretty solid philosophy of science argument which is basically if you can't actually know something via experiment then what claim does it have to being called real? At first glance this might seem to apply to quantum states, but being able to move them around exactly atomically even though you cant really glance under the hood kind, gives some serious weight to there being something "real" there. |
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