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4 months ago in Physics , Quantum Computing By Krirthi
Does the operation of quantum computers prove the existence of parallel universes, as suggested by David Deutsch?
I'm writing a paper on the philosophical implications of quantum computing. Deutsch's argument is compelling but also controversial. He claims that the exponential speedup of quantum algorithms must come from parallel computation in parallel universes. But I'm not convinced this is the only possible explanation. I need to disentangle the actual physics from the interpretive claim before I commit to a position in my thesis.
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By Trisha Answered 4 months ago
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By Jayanti Patil Answered 2 months ago
I have followed this debate closely since the 1990s. Deutsch's argument is elegant but I would caution against accepting it as proof. What quantum computers undeniably demonstrate is that quantum systems process information in a massively parallel way relative to classical systems. The many-worlds interpretation offers one compelling ontology for why this happens computation across universes. But it is not the only one. Bohmian mechanics and objective collapse theories also accommodate quantum speedup through different mechanisms. The computer works; the interpretation remains a matter of philosophical preference, not experimental verdict.
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