• Open Access

Efficiency of photonic state tomography affected by fiber attenuation

Artur Czerwinski and Jakub Szlachetka
Phys. Rev. A 105, 062437 – Published 21 June 2022

Abstract

In this article, we investigate the efficiency of photonic state tomography in the presence of fiber attenuation. The theoretical formalism of the photon loss is provided by implementing methods from the theory of open quantum systems. The quantum state is reconstructed from photon counts obtained for symmetric informationally complete positive operator-valued measures. The number of photons that reach the detectors is numerically modeled by the binomial distribution, which describes the loss of light caused by the medium. This approach allows us to study the quality of state tomography versus the length of the fiber. In particular, we focus on entangled qubits and qutrits, which are sent through fibers of different lengths. The amount of entanglement detected by the measurement scheme is quantified and presented on graphs. The results demonstrate how the quality of photonic tomography depends on the distance between the source and the receiver.

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  • Received 18 February 2022
  • Revised 18 May 2022
  • Accepted 6 June 2022

DOI:https://doi.org/10.1103/PhysRevA.105.062437

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal "citation, and DOI.

©2022 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Authors & Affiliations

Artur Czerwinski* and Jakub Szlachetka

  • Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Torun, ul. Grudziadzka 5, 87–100 Torun, Poland

  • *aczerwin@umk.pl

Article Text

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Issue

Vol. 105, Iss. 6 — June 2022

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