TBNQuantum
Separability does not certify zero-noise extrapolation: Factorial diagnostics in dynamic quantum circuits
Publication: quant-ph updates on arXiv.org
Author: Aryan Kumar
Source published: 22/10/2026, 04:00:00 UTC
Briefing created: 22/10/2026, 04:49:10 UTC
Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 22/10/2026, 04:13:24 UTC.
Briefings
A pre-specified factorial experiment on three IBM dynamic circuits tested whether separating gate, latency, and measurement errors could certify zero-noise extrapolation. The study found that while separate amplification knobs simplify error handling, they do not establish an accurate zero-noise limit. The primary echoed spectator observable showed a latency-measurement coefficient of b_LM=+0.0007 with a 95% bootstrap interval of [-0.0033, +0.0049]. All five original extrapolation strategies failed to include the known ideal value for three of six observables, indicating a significant bias-variance trade-off.
Key points
- The experiment used three IBM dynamic circuits with a 2^3 factorial design to test separability of gate, latency, and measurement errors.
- The latency-measurement coefficient for the primary observable was b_LM=+0.0007 with a 95% bootstrap interval of [-0.0033, +0.0049].
Context
This research addresses the challenge of zero-noise extrapolation in quantum computing by analyzing dynamic circuits. The findings clarify that while separate error amplification knobs simplify the process, they do not guarantee an accurate zero-noise limit without additional response model assumptions.
Limitations
The evidence is limited to a single pre-specified 2^3 factorial experiment on three IBM dynamic circuits. Results are based on a preprint (arXiv:2610.28705v1) and include uncertainty regarding the equivalence criterion and the specific ideal values for observables.
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