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Quantum tomograph for measurement and characterization of quantum states of biphoton sources
https://doi.org/10.32446/0368-1025it.2020-4-20-26
Abstract
The method and prototype of a device for characterizing of biphoton light sources based on spontaneous parametric downconversion by quantum tomography are described. The prototype is an experimental implementation of a specialized quantum tomograph designed to measure the quantum polarization states of radiation generated by biphoton sources. Specially developed software will determine the statistical characteristics of the measured quantum state, calculate the tomographic and likelihood estimations of the density matrix, calculate the measurement errors of the density matrix elements and evaluate the quality of the quantum state of biphotons.
About the Authors
D. N. Frolovtsev
International laser center; M. V. Lomonosov Moscow state university
Russian Federation
Russian Federation
Dmitry N. Frolovtsev
Moscow
S. A. Magnitskiy
International laser center; M. V. Lomonosov Moscow state university
Russian Federation
Russian Federation
Sergey A. Magnitskiy
Moscow
A. V. Demin
The All-Russian Research Institute for Optical and Physical Measurements Federal State
Russian Federation
Russian Federation
Andrey V. Demin
Moscow
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Review
For citations:
Frolovtsev D.N., Magnitskiy S.A., Demin A.V. Quantum tomograph for measurement and characterization of quantum states of biphoton sources. Izmeritel`naya Tekhnika. 2020;(4):20-26. (In Russ.) https://doi.org/10.32446/0368-1025it.2020-4-20-26
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