Quantum error correction goes well beyond breakeven
Summary
Complex quantum algorithms require logical qubits formed by grouping hardware qubits together to find and fix errors. Increasing the number of hardware qubits dedicated to each logical qubit improves the overall capability to detect and correct mistakes.
Running complicated algorithms on quantum computing hardware is going to require the use of logical qubits, where collections of hardware qubits are linked together in ways that allow errors to be detected and corrected. In general, the more hardware qubits you dedicate to each logical qubit, the better the chances are of identifying errors. But, given that the hardware qubits…
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