Direct state measurements under state-preparation-and-measurement errors

Direct state measurement (DSM) is a tomography method that allows for retrieving quantum states’ wave functions directly. However, shortcoming of current studies on the DSM it does not provide access to noisy systems. Here, we attempt fill gap by investigating precision undergoes state-preparation-and-measurement (SPAM) errors. We manipulate controlled framework with various configurations and compare efficiency between them. Under such SPAM errors, be measured lightly deviates from true state, error in postselection process results less accurate tomography. Our study could reliable tool errors contribute understanding resolving an urgent demand technologies.