SG-QST achieves comparable fidelity to full tomography on 3-5 qubit GHZ states using significantly fewer parameters by restricting operators to physically relevant correlations.
We focus on the 2048-shot case, as similar behavior is observed across all shot values
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Structured Quantum State Reconstruction via Physically Motivated Operator Selection
SG-QST achieves comparable fidelity to full tomography on 3-5 qubit GHZ states using significantly fewer parameters by restricting operators to physically relevant correlations.