The threshold is where you transition from needing infinite qubits to make an error corrected logical qubit, to needing a mere finite number. So... somewhere be

The threshold is where you transition from needing infinite qubits to make an error corrected logical qubit, to needing a mere finite number. So... somewhere between 1 and infinity (exclusive). Actually, because "in theory there's no difference between theory and practice but in practice there is", the number is probably still infinity. Like, if you look at figure 4 of their paper [0], you can see one device of the three is well above threshold at 1.5% error. They need sufficient quality more consistently before a large system built out of the pieces they are benchmarking would be below threshold. [1]: https://www.nature.com/articles/s41567-024-02614-w/figures/4 https://www.nature.com/articles/s41567-024-02614-w/figures/4