Self-consistent quantum measurement tomography based on semidefinite programming
Abstract
We propose an estimation method for quantum measurement tomography (QMT) based on semidefinite programming (SDP), and discuss how it may be employed to detect experimental imperfections, such as shot noise and/or faulty preparation of the input states on near-term quantum computers. Moreover, if the positive operator-valued measure (POVM) we aim to characterize is informationally complete, we put forward a method for self-consistent tomography, i.e., for recovering a set of input states and POVM effects that is consistent with the experimental outcomes and does not assume any a priori knowledge about the input states of the tomography. Contrary to many methods that have been discussed in the literature, our approach does not rely on additional assumptions such as low noise or the existence of a reliable subset of input states.
Cite
@article{arxiv.2212.10262,
title = {Self-consistent quantum measurement tomography based on semidefinite programming},
author = {Marco Cattaneo and Matteo A. C. Rossi and Keijo Korhonen and Elsi-Mari Borrelli and Guillermo García-Pérez and Zoltán Zimborás and Daniel Cavalcanti},
journal= {arXiv preprint arXiv:2212.10262},
year = {2023}
}
Comments
Accepted version