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We propose an efficient circuit-based quantum state tomography (QST) scheme to reconstruct $n$-qubit states with $k$ nonzero entries using measurements of $|\psi\rangle$ and $U_1|\psi\rangle, \dots, U_{2m}|\psi\rangle$, where $m \le k$. Each $U_j$ in
Externí odkaz:
http://arxiv.org/abs/2407.20298
