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In an article I read " What sets company X apart are topical qubits that correct each other."

Google did not return results for "topical qubit".

Can someone explain the topical qubit - assuming that I understand how qubits operate? How do they correct each other?

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  • $\begingroup$ There's no such thing as a "topical qubit." Company X plans to make "topological qubits." And they don't actually "correct each other," either, although topological qubits do have better error-correction properties than the other technologies people are working on. $\endgroup$ – Peter Shor Jun 19 '18 at 20:30
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That appears to me to be a typographical error. It should be topological, not topical, qubit. In a nutshell, the idea is to employ the quantum states of different, more exotic microscopic systems composed of anyons.

See, for example, https://en.wikipedia.org/wiki/Topological_quantum_computer

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