A timing plot, drawn as horizontal bars, of quantum error-correction circuits for 'BB5' codes, a family of quantum low-density parity-check codes, at code distances 3, 4 and 5. It comes from the arXiv paper 'Breakeven demonstration of quantum low-density parity-check codes' (Tham, Debnath, Delfosse and co-authors), figure 12. Each bar alternates laser (Raman) gate periods with state preparation and mid-circuit measurement; notice how every added syndrome-extraction cycle lengthens the circuit, reaching about half a second.“Fig. 12 — Figure 12: Green/blue lines indicate one-/two-qubit Raman gates, and red lines indicate periods of state preparation, MCM, or readout. All Raman gates are…” by Edwin Tham et al., arxiv.org/abs/2606.06455, CC BY 4.0 (creativecommons.org/licenses/by/4.0/)
