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A microwave splitter for superconducting quantum circuits

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Abstract

Applications of up-to-date cryoelectronics, especially in quantum microwave engineering, require instruments that operating identically to an optical beam splitter. Using niobium technology for the application of thin film structures, we have fabricated a microwave signal power splitter with central frequency f 0 = 7.2 GHz. We have demonstrated experimentally that, in the 1-GHz band around central frequency f 0, the characteristics of the second and the third output ports are in the range of −3 ± 0.8 dB of the signal input power. The attenuation within power transfer from signal ports to the insulation port is 10 dB. The above-mentioned characteristics have been obtained at an operating temperature below the superconducting transition temperature.

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Authors and Affiliations

  1. Department of Experimental Physics, Comenius University, SK-84248, Bratislava, Slovakia

    P. Neilinger & M. Grajcar

  2. Institute of Physics, Slovak Academy of Science, 845 11, Bratislava, Slovakia

    P. Neilinger & M. Grajcar

  3. Leibniz Institute of Photonic Technology, P.O. Box 100239, D-07702, Jena, Germany

    G. Oelsner & E. V. Il’ichev

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

    B. I. Ivanov, I. L. Novikov & E. V. Il’ichev

Authors
  1. P. Neilinger
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  2. G. Oelsner
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  3. M. Grajcar
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  4. B. I. Ivanov
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  5. I. L. Novikov
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  6. E. V. Il’ichev
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Corresponding author

Correspondence to B. I. Ivanov.

Additional information

Original Russian Text © P. Neilinger, G. Oelsner, M. Grajcar, B.I. Ivanov, I.L. Novikov, E.V. Il’ichev, 2015, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2015, Vol. 41, No. 7, pp. 16–21.

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Neilinger, P., Oelsner, G., Grajcar, M. et al. A microwave splitter for superconducting quantum circuits. Tech. Phys. Lett. 41, 314–316 (2015). https://doi.org/10.1134/S1063785015040136

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  • DOI: https://doi.org/10.1134/S1063785015040136

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