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Damping of Vacuum Rabi Oscillations in a Two-Qubit Structure in a High-Q Cavity

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Abstract

The article studies the attenuation of vacuum Rabi oscillations for a system of two superconducting solid-state qubits placed in a high-Q microwave cavity. Two different cases are considered in which: 1) the first qubit is excited at the initial time and 2) the initial state comprises an entangled symmetric and antisymmetric pair of states. The dependence of the attenuation on various parameters, primarily on the coupling constant between qubits and the field and on the distance between qubits, is studied in detail. It is shown that, for some parameters, the relaxation time of the excited state of a qubit in such a system is significantly longer than that of a single qubit in the cavity.

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ACKNOWLEDGMENTS

We are grateful to A.N. Sultanov for useful discussions.

Funding

This work was supported by the Ministry of Science and Higher Education of the Russian Federation as part of the state assignment on project FSUN-2020-0004.

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Authors and Affiliations

  1. Novosibirsk State Technical University, 630073, Novosibirsk, Russia

    O. A. Chuikin, Ya. S. Greenberg & A. A. Shtygashev

Authors
  1. O. A. Chuikin
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  2. Ya. S. Greenberg
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  3. A. A. Shtygashev
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Corresponding author

Correspondence to Ya. S. Greenberg.

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The authors declare that they have no conflicts of interest.

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Translated by E. Chernokozhin

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Chuikin, O.A., Greenberg, Y.S. & Shtygashev, A.A. Damping of Vacuum Rabi Oscillations in a Two-Qubit Structure in a High-Q Cavity. Phys. Solid State 62, 1571–1579 (2020). https://doi.org/10.1134/S106378342009005X

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  • DOI: https://doi.org/10.1134/S106378342009005X

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