Fig. 3: Results of estimation error for qutrit.
From: Direct estimation of quantum coherence by collective measurements

Mean error for estimating \({C}_{{\ell }_{1}}\) for a family of qutrit states in Eq. (11) for CMS and qutrit state tomography (numerical simulation). The sample size is N = 1200. Each data point is the average of 1000 repetitions, and the error bars denote the standard deviation.