Method to reconstruct the unitary component of a quantum channel from minimal mixed or pure state pairs, with resource comparisons to Choi-matrix methods for noisy dynamics and robustness to SPAM errors.
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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.
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Reconstructing the unitary part of a noisy quantum channel
Method to reconstruct the unitary component of a quantum channel from minimal mixed or pure state pairs, with resource comparisons to Choi-matrix methods for noisy dynamics and robustness to SPAM errors.
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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.