Pauli measurements are not optimal for single-copy tomography

Jayadev Acharya, Abhilash Dharmavarapu, Yuhan Liu +1

Quantum state tomography is a fundamental problem in quantum computing. Given $n$ copies of an unknown $N$-qubit state $\ddot{I}\in {\mathbb{C}}^{d\times d},d=2^N$, the goal is to learn t…