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The use of multilevel quantum information carriers, also known as qudits, has attracted significant interest as a way of further scaling quantum computing devices. However, such multilevel systems usually express shorter coherence time than their two-level counterparts, which limits their computational potential. We thus propose and experimentally demonstrate two approaches for realizing the continuous dynamical decoupling of magnetic-sensitive states with mF = ±1 for qudits encoded in optical transition of trapped 171Yb+ ions. We improve the coherence time of qudit levels by an order of magnitude (more than 9 ms) without any magnetic shielding, revealing the potential advantage of the symmetry of the 171Yb+ ion energy structure for counteracting magnetic field noise. Our results are a step toward realizing qudit-based algorithms using trapped ions.

Проведен анализ опыта как отечественных, так и зарубежных авторов по применению методик установления наличия слюны на вещественных доказательств. Представлены две колориметрические модификации методик, предназначенных для ориентировочного установления наличия слюны в пятнах, следах и участках на вещественных доказательствах. Предложенная нами модификация сопровождается фотометрическим учетом и компьютерной обработкой результатов. Широко раскрываются производительность, объективность, а также другие возможности и преимущества данных методов при использовании их в судебно-медицинской практике.

The authors analyze the experience of both domestic and of foreign authors in application of the methods for detection of rough and demonstrative presence of the sperm in the stains on the material evidences. Colorimetric method for definition of the acid phosphotase presence and the ELISA technique for definition of PSA are compared with other modern techniques applied in Russia. Sensitivity, objectivity, actuality, economyand other potentialities and advantages of both methods are more pronounced in forensic medicine practice.

The article presents a modification of the colorimetric method for the preliminary establishment of presence of blood in the stainson the material evidences using benzidine test. The proposed modification is accompanied by photometric accounting and computer processing of the results. Performance, objectivity, as well as other features and advantages of this method when used in forensic practice are described in detail.

The article presents the analysis of experience, both of domestic, and of foreign authors in application of the techniques for identification of the blood in the stains on material evidences. The method of definition of IgG by means of ELISA is compared with other modern techniques applied in Russia. Sensitivity, objectivity, actuality and other qualities and advantages of this method are widely displayed when applied in forensic practice.