The novel experimental realization of three-level optical quantum systems is presented. We
use the polarization state of biphotons to generate a specific sequence of states that are …

We discuss a procedure of measurement followed by the reproduction of the quantum state
of a three-level optical system—a frequency—and spatially degenerate two-photon field …

We present a complete methodology for testing the performances of quantum tomography
protocols. The theory is validated by several numerical examples and by the comparison …

Mixed-state purification is used as a basis to formulate a general statistical method for
reconstructing the density matrix of an arbitrary quantum state. A universal statistical …

We investigate, in a general form, entanglement of biphoton qutrits and ququarts, ie states
formed in the processes of, correspondingly, degenerate and non-degenerate spontaneous …

We consider realistic measurement systems, where measurements are accompanied by
decoherence processes. The aim of this work is the construction of methods and algorithms …

We introduce and demonstrate a technique for generating a range of novel multi-photon
entangled states. Adjusting a simple experimental parameter allows the preparation of pure …

This paper describes the model of a compound Poisson distribution for photon statistics with
regard to their bunching in Fock states, thermal states, and others. The method of generating …

A new method of solving classical and quantum problems of statistical data analysis based
on the symbiosis of notions of quantum theory and mathematical statistics is considered …

Multilevel quantum states (qudits) represent a promising platform for scalable quantum
computing. In this paper, we present a method for precisely controlling such systems using …