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A comment on What are we going to do with quantum computers?. Parent comment

Re:What are we going to do with quantum computers? by efangs on Sunday February 25, 2018 @04:09PM (#16461160)
It's true that at 50-100 physical (not logical) qubits, it's no longer possible to simulate classically. That does not mean that they are useful.

As other people pointed out, you may need a factor of 100-1000 more physical qubits to get as many logical qubits.

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