Using an all-to-all product of ZZ gates as a deterministic global unitary, classical shadow tomography achieves ~1.8^k sample complexity for dense k-local Pauli strings.
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Contractive Unitary and Classical Shadow Tomography
Using an all-to-all product of ZZ gates as a deterministic global unitary, classical shadow tomography achieves ~1.8^k sample complexity for dense k-local Pauli strings.