DA-CASE reconstructs subspace, Hamiltonian, and observable matrices from one cached Pauli expectation bank, reducing retained measurement width on H4 from 7371 to 2240 words without changing the solved subspace.
Reuse across observables or repeated solves is needed to amortize that cost
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DA-CASE: reusable measurements for adaptive quantum subspaces
DA-CASE reconstructs subspace, Hamiltonian, and observable matrices from one cached Pauli expectation bank, reducing retained measurement width on H4 from 7371 to 2240 words without changing the solved subspace.