91 citations · 256 across the 10 of their papers we have counts for
9 papers
Preparing a commercial quantum key distribution system for certification against implementation loopholes
Vadim Makarov, Alexey Abrikosov, Poompong Chaiwongkhot +9
A commercial quantum key distribution (QKD) system needs to be formally certified to enable its wide deployment. The certification should include the system's robustness against kn…
Probability representation of quantum dynamics using pseudostochastic maps
E. O. Kiktenko, A. O. Malyshev, A. S. Mastiukova +3
In this work, we consider a probability representation of quantum dynamics for finite-dimensional quantum systems with the use of pseudostochastic maps acting on true probability d…
Information processing using three-qubit and qubit-qutrit encodings of noncomposite quantum systems
A. A. Popov, E. O. Kiktenko, A. K. Fedorov +1
We study quantum information properties of a seven-level system realized by a particle in an one-dimensional square-well trap. Features of encodings of seven-level systems in a for…
Post-processing procedure for industrial quantum key distribution systems
E. O. Kiktenko, A. S. Trushechkin, Y. V. Kurochkin +1
We present algorithmic solutions aimed on post-processing for industrial quantum key distribution systems with hardware sifting. The main steps of the procedure are error correctio…
Mutual information-energy inequality for thermal states of a bipartite quantum system
Aleksey Fedorov, Evgeny Kiktenko
In this work, we consider an upper bound for the quantum mutual information in thermal states of a bipartite quantum system. This bound is related with the interaction energy and l…
Multilevel superconducting circuits as two-qubit systems: Operations, state preparation, and entropic inequalities
E. O. Kiktenko, A. K. Fedorov, O. V. Man'ko +1
We theoretically study operations with a four-level superconducting circuit as a two-qubit system. Using a mapping on a two-qubit system, we show how to implement iSWAP gates and H…
Tomographic discord for a system of two coupled nanoelectric circuits
A. K. Fedorov, E. O. Kiktenko, O. V. Man'ko +1
We consider quantum correlations and quantum discord phenomena for two-qubit states with -type density matrices in the tomographic framework of quantum mechanics. By introducing…
Tomographic causal analysis of two-qubit states and tomographic discord
Evgeny Kiktenko, Aleksey Fedorov
We study a behavior of two-qubit states subject to tomographic measurement. We propose a novel approach to definition of asymmetry in quantum bipartite state based on its tomograph…
Quaternion representation and symplectic spin tomography
Aleksey Fedorov, Evgeny Kiktenko
Quantum tomography for continuous variables is based on the symplectic transformation group acting in the phase space. A particular case of symplectic tomography is optical tomogra…