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.
(b) In each subsystemk, measure the observableU † k Ok Uk
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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.