5min chapter

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Scott Aaronson | Quantum Computing: History, Near-term Applications, Future Possibilities

The Foresight Institute Podcast

CHAPTER

Are Quantum Measurements Reversible?

In the original Copenhagen formulation of quantum mechanics, they would not be right a measurement is just a primitive of the world that we don't try to analyze in terms of anything deeper. Everett says that measurement just means all of those things getting becoming entangled. And I think that it is by now sort of uncontroversial that, you know, that measurement should be thought of in that way. But undoing a quantum measurement would be many, many words of magnitude harder than reversing an ordinary one.

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