한국초전도ㆍ저온공학회논문지 (Progress in Superconductivity and Cryogenics)

  • 제23권4호
  • /
  • Pages.6-9
  • /
  • 2021
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  • 1229-3008(pISSN)
  • /
  • 2287-6251(eISSN)
한국초전도저온학회 (The Korean Society of Superconductivity and Cryogenics)
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Effect of capacitive coupling in superconducting coplanar waveguide resonator

  • Baek, Geonwoo (Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST)) ;
  • Kim, Bongkeon (Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST)) ;
  • Arif, Sara (Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST)) ;
  • Doh, Yong-Joo (Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST))
  • 투고 : 2021.11.24
  • 심사 : 2021.12.16
  • 발행 : 2021.12.31
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초록

Superconducting coplanar waveguide (SCPW) resonators with high quality (Q) factor are widely used for developing quantum sensors and quantum information processors. Here we conducted numerical simulations of SCPW resonators to investigate the relationship between the Q factor and the coupling capacitance of the resonator. Varying the geometrical shape of both ends and coupling parameters of the SCPW resonator resulted in a change of the coupling capacitances and the Q factor as well. Our calculation results indicate that the performance of the SCPW resonator is highly sensitive to the capacitive coupling and searching for an optimal coupling condition would be crucial for developing high-performance SCPW resonator.

키워드

과제정보

This study was supported by the NRF of Korea through the research program (2018R1A3B1052827 and 2019M3E4A80146) and the GRI grant funded by GIST in 2021.

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