# IonQ researchers propose scheduled qLDPC error correction with up to 74x faster logical Clifford operations

Canonical page: https://technooptimist.io/stories/ionq-researchers-propose-scheduled-qldpc-error-correction-with-up-to-432d96b3
Date: 12 Oct 2026
About: [IonQ](https://technooptimist.io/companies/ionq.md)
Original source: https://quantumcomputingreport.com/ionq-demonstrates-scheduled-qldpc-error-correction-to-accelerate-fault-tolerant-gate-execution-by-up-to-74x/

IonQ researchers published an arXiv paper describing a way to run logical operations across densely packed quantum error-correcting code blocks with fewer delays. Instead of sequential logical measurements, the method schedules joint measurements with a classical scheduler code and runs several commuting measurements at once using cat states.

## Key facts

- The up-to-74x speedup applies to logical Clifford operations on a 22-logical-qubit code (Q102) in one random circuit; a smaller 6-qubit code shows 18.5x
- Logical Toffoli gates speed up by up to 5x on Q102 and 4.2x on Q70
- Generic joint measurement is roughly 2.4x to 3.0x faster than the Viterbi baseline, depending on the parameter L
- The figures are best-case values for specific codes; the article does not say whether results come from hardware or simulation or name the Clifford baseline

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