Entanglement certification with randomized measurements is the most resource-intensive task among all two-qubit invariants because it requires the maximum number of measurement settings.
Using the same observable (but permuting on which subsystem the 1−σ 1 terms act) gives access to P jkℓ Wjkℓ T CA ℓj βk andP jkℓ Wjkℓ αj T BC kℓ via symmetry
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Entanglement quantification with randomized measurements is maximally difficult
Entanglement certification with randomized measurements is the most resource-intensive task among all two-qubit invariants because it requires the maximum number of measurement settings.