A single seven-outcome photonic measurement estimates 4D quantum states near a known fiducial state with infidelity 3.8/N versus the Gill-Massar bound 3/N.
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Efficient Experimental Qudit State Estimation via Point Tomography
A single seven-outcome photonic measurement estimates 4D quantum states near a known fiducial state with infidelity 3.8/N versus the Gill-Massar bound 3/N.