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  1. Article

    Open Access

    Erratum to: Several Articles in JETP Letters

    An Erratum to this paper has been published: https://doi.org/10.1134/S0021364022390023

    N. V. Semenin, A. S. Borisenko, I. V. Zalivako, I. A. Semerikov… in JETP Letters (2022)

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  2. Article

    Open Access

    Determination of the Heating Rate and Temperature of an Ion Chain in a Linear Paul Trap by the Dephasing of Rabi Oscillations

    The optimization of the parameters of laser cooling and the investigation of the heating rate in ion traps require the measurement of the temperature of ion chains for which the Lamb–Dicke regime is satisfied....

    N. V. Semenin, A. S. Borisenko, I. V. Zalivako, I. A. Semerikov… in JETP Letters (2022)

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  3. No Access

    Article

    Optimization of the Readout Fidelity of the Quantum State of an Optical Qubit in the 171Yb+ Ion

    A scheme based on a laser cooling system has been proposed to detect the state of an optical qubit in the 171Yb+ ion. Analytical expressions have been derived for the readout fidelity including the dark photon co...

    N. V. Semenin, A. S. Borisenko, I. V. Zalivako, I. A. Semerikov… in JETP Letters (2021)

  4. No Access

    Article

    Comparison of Three Ultrastable Lasers with a Femtosecond Frequency Comb

    The comparison of optical oscillators is used both to determine their spectral characteristics and to perform fundamental research. To describe each individual laser system, it is necessary to compare at least...

    K. S. Kudeyarov, A. A. Golovizin, A. S. Borisenko, N. O. Zhadnov… in JETP Letters (2021)

  5. No Access

    Article

    Experimental Study of the Optical Qubit on the 435-nm Quadrupole Transition in the 171Yb+ Ion

    Ultracold ions provide one of the most promising platforms for quantum computing and make it possible to reach record coherence times, the fidelity of preparation and readout operations, and single- and two-qu...

    I. V. Zalivako, I. A. Semerikov, A. S. Borisenko, M. D. Aksenov… in JETP Letters (2021)

  6. No Access

    Article

    Optimization of the Normal Mode Spectrum of Linear Ion Crystals in Paul Traps for EIT Cooling Using an Optical Lattice

    Ions in radio-frequency traps are widely used in various fields of applied and fundamental physics, such as metrology and quantum computing. One of the important tasks required for modern experiments is deep c...

    L. A. Akopyan, I. V. Zalivako, K. E. Lakhmanskiy, K. Yu. Khabarova… in JETP Letters (2020)