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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Microelectronics</journal-id><journal-title-group><journal-title xml:lang="en">Russian Microelectronics</journal-title><trans-title-group xml:lang="ru"><trans-title>Микроэлектроника</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0544-1269</issn><issn publication-format="electronic">3034-5480</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">699161</article-id><article-id pub-id-type="doi">10.7868/S3034548025060013</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>QUANTUM TECHNOLOGIES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КВАНТОВЫЕ ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">DESIGN OF FUZZY QUANTUM MEASUREMENT PROTOCOLS FOR ION-BASED QUDITS</article-title><trans-title-group xml:lang="ru"><trans-title>РАЗРАБОТКА ПРОТОКОЛОВ НЕЧЕТКИХ КВАНТОВЫХ ИЗМЕРЕНИЙ ДЛЯ ИОННЫХ КУДИТОВ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Koksharov</surname><given-names>K. B.</given-names></name><name xml:lang="ru"><surname>Кокшаров</surname><given-names>К. Б.</given-names></name></name-alternatives><email>kirill.koksharov7@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bogdanov</surname><given-names>Yu. I.</given-names></name><name xml:lang="ru"><surname>Богданов</surname><given-names>Ю. И.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bantysh</surname><given-names>B. I.</given-names></name><name xml:lang="ru"><surname>Бантыш</surname><given-names>Б. И.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lukichev</surname><given-names>V. F.</given-names></name><name xml:lang="ru"><surname>Лукичев</surname><given-names>В. Ф.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Research University MIET</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский университет «МИЭТ»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">National Research Center "Kurchatov Institute" — Valley Institute of Physics and Technology</institution></aff><aff><institution xml:lang="ru">НИЦ «Курчатовский институт» – ОФТИ им. К.А. Валцева</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2025</year></pub-date><volume>54</volume><issue>6</issue><issue-title xml:lang="en">VOL 54, NO6 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 54, №6 (2025)</issue-title><fpage>461</fpage><lpage>469</lpage><history><date date-type="received" iso-8601-date="2025-12-23"><day>23</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2026-12-22"/></permissions><self-uri xlink:href="https://journals.eco-vector.com/0544-1269/article/view/699161">https://journals.eco-vector.com/0544-1269/article/view/699161</self-uri><abstract xml:lang="en"><p>We propose a model for quantum tomography protocols of ion-trap qudits that incorporates parameter-setting errors in measurement transformations. A comparative analysis of reconstruction accuracy under transformation uncertainty is conducted for both the conventional projective measurement approach and the fuzzy quantum measurement framework. The results demonstrate a substantial advantage of the fuzzy measurement model in the presence of transformation inaccuracies. Furthermore, the model enables the construction of a complete set of two-level unitary transformations applicable to qudit states.</p></abstract><trans-abstract xml:lang="ru"><p>Предложена модель расчета протоколов квантовой томографии ионных кудитов, которая позволяет учитывать ошибки в задании параметров преобразований при проведении измерений. Представлено сравнение точности томографии ионных кудитов в условиях задания параметров преобразований с ошибками для стандартного метода и метода нечетких квантовых измерений. Продемонстрировано радикальное преимущество модели нечетких квантовых измерений по сравнению со стандартной моделью. Показано, что разработанная модель позволяет получить набор двухуровневых преобразований квантовых состояний кудитов, обеспечивающий реализацию заданного протокола квантовых измерений.</p></trans-abstract><kwd-group xml:lang="en"><kwd>quantum tomography</kwd><kwd>qudit</kwd><kwd>ion trap</kwd><kwd>fuzzy quantum measurements</kwd><kwd>parameter errors</kwd><kwd>two-level transformations</kwd><kwd>quantum state reconstruction</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>квантовая томография</kwd><kwd>кудит</kwd><kwd>ионная ловушка</kwd><kwd>нечеткие квантовые измерения</kwd><kwd>ошибки параметров</kwd><kwd>двухуровневые преобразования</kwd><kwd>реконструкция квантового состояния</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Российского Научного Фонда, проект № 22-12-00263-П, https://rscf.ru/project/22-12-00263/. Раздел 4 «Расчет зашумленного протокола и метод нечетких квантовых измерений» подготовлен в рамках государственного задания НИЦ «Курчатовский институт» – ОФТИ им. К. А. Валиева.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Drozhzhin D.A., Nikolaeva A.S., Kitenko E.O., Fedorov A.K. Tran[spiling quantum assembly language circuits to a qudit form // Entropy. 2024. Vol. 26. № 12. P. 1129.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Ringbauer M., Meth M., Postler L., Stricker R., Baltt R. Universal qudit quantum processor with trapped ions // Nature Physics. 2022. Vol. 18. 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