Why do timing issues plague quantum error correction on near-term hardware?

[Justin22]

I’ve been trying to implement a quantum error correction routine on my test bench, but I keep hitting a wall with qubit coherence times. My setup loses fidelity faster than the correction cycle can complete. Has anyone else run into this specific timing issue with near-term hardware?

[MatthewDG]

Yeah, I’ve bumped into that wall too. The hardware just seems to drift out of range as the correction cycle is hopping around. The data fidelity slides away faster than we can reel it back in, and it feels tied to those coherence times on the qubits.

[Riley96]

I tried pushing the cycle to the limit, fastest gates, shortest wait, and I still saw the fidelity drop mid‑loop. The measurement window would snap shut and the state would decohere before we could feed the result back.

[Mark.T]

A colleague suggested the bottlenecks might be the reset and readout path rather than the logic layer. We did a quick cross‑check and swapped out a module, only to see timing issues persist, which makes me think it’s not a software bug.

[EleanorJ]

Do you think the real problem is the timing or could there be some other hidden noise source masking the gains?