Symmetry Discovery in Quantum Learning: Observable-Level and Task-Level Inference from Finite Measurements
Symmetry reduces the capacity of a quantum learning model, but the imposed group must match both the measured information and the label transformation. We establish a finite-measurement theory for inferring this group from candidate transformations. The central structural result identifies observable-invisible transformations with the stabilizer of a projected state whenever the probe span is invariant. It turns recovered generators into a valid subgroup and identifies the continuous invisible space with its Lie algebra. For finite dictionaries, an unbiased shadow statistic distinguishes zero from positive squared expectation discrepancies with an inverse-gap measurement rate, improving t...
| Authors | Zeyu Chen |
|---|---|
| Primary category | quant-ph |
| Published | 11 September 2026 |
| Last updated at source | 11 September 2026 |
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