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Russian Microelectronics

Precision Reconstruction of Polarization Quantum States under Noisy Measurement Conditions

I. K. Golyshev, N. A. Bogdanova, Yu. I. Bogdanov, V. F. Lukichev

Published Oct 1, 2025• 1 citation
Publisher

Abstract

Abstract An algorithm for forming an adequate model for reconstructing polarization quantum states under noisy conditions is presented. For the correct analysis of the statistics of reading quantum states, a mathematical model of fuzzy measurements is used. It is shown that the developed method allows us to significantly increase the accuracy of reconstructing polarization states under the influence of quantum noise and decoherence processes.

DOI
10.1134/s1063739725600670

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The report presents a general approach for estimating quantum information technologies by means of fuzzy quantum measurements. The developed methods are used for precision reconstruction of quantum states under conditions of significant influence of decoherence and quantum noise. Monitoring of the amount of information about quantum states and their parameters, including the loss of information caused by the effect of quantum noise, is considered. Examples of the developed approach as applied to readout errors and phase relaxation are presented.
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