Tomography of binary quantum detectors
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Dong, D
Yonezawa, H
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Nice, France
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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.
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Proceedings of the IEEE Conference on Decision and Control
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2019-December
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© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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Computational complexity and computability
Quantum information, computation and communication
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Wang, Y; Dong, D; Yonezawa, H, Tomography of binary quantum detectors, Proceedings of the IEEE Conference on Decision and Control, 2019, 2019-December, pp. 396-400