The big question is how many physical qubits is needed to have 7000 stable logical qubits. It could be millions!
here’s an interesting piece:
“(…) This scalability suggests that an error rate better than one in one million could be achieved using a distance-17 qubit array that comprises 577 qubits of suitably high quality.”
https://physicsworld.com/a/breakthrough-in-quantum-error-correction-could-lead-to-large-scale-quantum-computers/
“(…) This scalability suggests that an error rate better than one in one million could be achieved using a distance-17 qubit array that comprises 577 qubits of suitably high quality.”
https://physicsworld.com/a/breakthrough-in-quantum-error-correction-could-lead-to-large-scale-quantum-computers/