Methods for analysing the quality of the element base of quantum information technologies

Methods for analysing the quality of the element base of quantum information technologies are considered. Methods for simulating quantum operations with allowance for quantum noise, based on the formalism of quantum operations (operator sum method and Choi - Jamiolkowski isomorphism), are described....

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2018-12, Vol.48 (11), p.1016-1022
Main Authors: Bogdanov, Yu.I., Fastovets, D.V., Bantysh, B.I., Chernyavskii, A.Yu, Semenikhin, I.A., Bogdanova, N.A., Katamadze, K.G., Kuznetsov, Yu.A., Kokin, A.A., Lukichev, V.F.
Format: Article
Language:English
Subjects:
ACCURACY
algorithm
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Computer simulation
Debugging
decoherentisation
Isomorphism
Logic circuits
Maximum likelihood method
MAXIMUM-LIKELIHOOD FIT
measurements
Microprocessors
NOISE
QUANTUM COMPUTERS
Quantum computing
QUANTUM CRYPTOGRAPHY
quantum informatics
Quantum phenomena
QUANTUM STATES
quantum tomography
qubit
QUBITS
Qubits (quantum computing)
RELAXATION
simulation
TOMOGRAPHY
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Summary:Methods for analysing the quality of the element base of quantum information technologies are considered. Methods for simulating quantum operations with allowance for quantum noise, based on the formalism of quantum operations (operator sum method and Choi - Jamiolkowski isomorphism), are described. Results of simulating some one- and two-qubit quantum transformations with allowance for the amplitude and phase relaxation and the presence of depolarising noise are reported. The quantum state tomography, based on the root approach and maximum likelihood method, is considered. The method of guaranteed estimation of quantum tomography accuracy, which implies quantitative estimation of measurement results, is described. Tomography of a single-qubit transformation on a superconducting quantum processor (IBM) is performed. The practical purpose of the study is to provide high quality and efficiency of quantum information technologies. The results obtained can be used to improve the quality of logic gates of quantum computers and debug the procedures of quantum state control in quantum cryptography problems. The bibliography includes 28 references.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16760