A method to characterize large quantum computers using only a single measurement setting PRX_Quantum
state orthogonal to the first SIC vector, whose component completely vanishes. Convergence in is significantly faster than in as only three of the nonorthogonal SIC vectors take part. Boosted convergence is related to unambiguous state discrimination [], limiting nonorthogonal measurements. Superposition state with maximized overlap with one of the SIC vectors. Superposition state with minimum overlap with the SIC vectors.
Complementary, insets represent numerical results on projection noise only to more distinctively illustrate convergence behavior. – Local states that align with a SIC vector , show slower convergence for SIC tomography than those orthogonal to a SIC vector ,, confirming the experimental observations of Fig.. Pauli tomography, on the other hand, generally performs best for states aligned with the basis ,.
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