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IEEE Conference on Decision and Control (CDC)

Tomography of binary quantum detectors

Yuanlong Wang, Daoyi Dong, Hidehiro Yonezawa

Published Dec 1, 2019• 5 citations
Publisher

Abstract

A tomography method for binary detectors is developed. In this method, different input states are employed and the measurement data are then collected. First a primary estimation of the detector is obtained through least squares estimation, without considering the restriction on the eigenvalues of the detector. Then this possibly nonphysical estimation is projected onto the physical subspace to obtain a final estimation. We analyze the computational complexity of this algorithm, and present a theoretical error upper bound. Numerical simulation on a two-qubit example validates the effectiveness of the algorithm.

DOI
10.1109/cdc40024.2019.9029759

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