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Suppressing Decoherence in Quantum State Transfer with Unitary Operations

Decoherence is the fundamental obstacle limiting the performance of quantum information processing devices. The problem of transmitting a quantum state (known or unknown) from one place to another is of great interest in this context. In this work, by following the recent theoretical proposal, we st...

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Autores principales: Gavreev, Maxim A., Kiktenko, Evgeniy O., Mastiukova, Alena S., Fedorov, Aleksey K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9858199/
https://www.ncbi.nlm.nih.gov/pubmed/36673212
http://dx.doi.org/10.3390/e25010067
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author Gavreev, Maxim A.
Kiktenko, Evgeniy O.
Mastiukova, Alena S.
Fedorov, Aleksey K.
author_facet Gavreev, Maxim A.
Kiktenko, Evgeniy O.
Mastiukova, Alena S.
Fedorov, Aleksey K.
author_sort Gavreev, Maxim A.
collection PubMed
description Decoherence is the fundamental obstacle limiting the performance of quantum information processing devices. The problem of transmitting a quantum state (known or unknown) from one place to another is of great interest in this context. In this work, by following the recent theoretical proposal, we study an application of quantum state-dependent pre- and post-processing unitary operations for protecting the given (multi-qubit) quantum state against the effect of decoherence acting on all qubits. We observe the increase in the fidelity of the output quantum state both in a quantum emulation experiment, where all protecting unitaries are perfect, and in a real experiment with a cloud-accessible quantum processor, where protecting unitaries themselves are affected by the noise. We expect the considered approach to be useful for analyzing capabilities of quantum information processing devices in transmitting known quantum states. We also demonstrate the applicability of the developed approach for suppressing decoherence in the process of distributing a two-qubit state over remote physical qubits of a quantum processor.
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spelling pubmed-98581992023-01-21 Suppressing Decoherence in Quantum State Transfer with Unitary Operations Gavreev, Maxim A. Kiktenko, Evgeniy O. Mastiukova, Alena S. Fedorov, Aleksey K. Entropy (Basel) Article Decoherence is the fundamental obstacle limiting the performance of quantum information processing devices. The problem of transmitting a quantum state (known or unknown) from one place to another is of great interest in this context. In this work, by following the recent theoretical proposal, we study an application of quantum state-dependent pre- and post-processing unitary operations for protecting the given (multi-qubit) quantum state against the effect of decoherence acting on all qubits. We observe the increase in the fidelity of the output quantum state both in a quantum emulation experiment, where all protecting unitaries are perfect, and in a real experiment with a cloud-accessible quantum processor, where protecting unitaries themselves are affected by the noise. We expect the considered approach to be useful for analyzing capabilities of quantum information processing devices in transmitting known quantum states. We also demonstrate the applicability of the developed approach for suppressing decoherence in the process of distributing a two-qubit state over remote physical qubits of a quantum processor. MDPI 2022-12-30 /pmc/articles/PMC9858199/ /pubmed/36673212 http://dx.doi.org/10.3390/e25010067 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gavreev, Maxim A.
Kiktenko, Evgeniy O.
Mastiukova, Alena S.
Fedorov, Aleksey K.
Suppressing Decoherence in Quantum State Transfer with Unitary Operations
title Suppressing Decoherence in Quantum State Transfer with Unitary Operations
title_full Suppressing Decoherence in Quantum State Transfer with Unitary Operations
title_fullStr Suppressing Decoherence in Quantum State Transfer with Unitary Operations
title_full_unstemmed Suppressing Decoherence in Quantum State Transfer with Unitary Operations
title_short Suppressing Decoherence in Quantum State Transfer with Unitary Operations
title_sort suppressing decoherence in quantum state transfer with unitary operations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9858199/
https://www.ncbi.nlm.nih.gov/pubmed/36673212
http://dx.doi.org/10.3390/e25010067
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