High impedance Josephson junction resonators in the transmission line geometry
(2023) In Applied Physics Letters 123(11). p.114002-114002- Abstract
- In this article, we present an experimental study of microwave resonators made out of Josephson junctions. The junctions are embedded in a transmission line geometry so that they increase the inductance per length for the line. By comparing two devices with different input/output coupling strengths, we show that the coupling capacitors, however, add a significant amount to the total capacitance of the resonator. This makes the resonators with high coupling capacitance to act rather as lumped element resonators with inductance from the junctions and capacitance from the end sections. Based on a circuit analysis, we show that the input and output couplings of the resonator are limited to a maximum value of ω_rZ_0/4Z_r, where ωr is the... (More)
- In this article, we present an experimental study of microwave resonators made out of Josephson junctions. The junctions are embedded in a transmission line geometry so that they increase the inductance per length for the line. By comparing two devices with different input/output coupling strengths, we show that the coupling capacitors, however, add a significant amount to the total capacitance of the resonator. This makes the resonators with high coupling capacitance to act rather as lumped element resonators with inductance from the junctions and capacitance from the end sections. Based on a circuit analysis, we show that the input and output couplings of the resonator are limited to a maximum value of ω_rZ_0/4Z_r, where ωr is the resonance frequency and Z_0 and Z_r are the characteristic impedances of the input/output lines and the resonator, respectively. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/0cc0dc58-f2ed-44c2-9919-37419870eac4
- author
- Ranni, Antti LU ; Havir, Harald LU ; Haldar, Subhomoy LU and Maisi, Ville LU
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- microwave, strong coupling, Josephson junction
- in
- Applied Physics Letters
- volume
- 123
- issue
- 11
- pages
- 5 pages
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- scopus:85171561538
- ISSN
- 1077-3118
- DOI
- 10.1063/5.0164323
- language
- English
- LU publication?
- yes
- id
- 0cc0dc58-f2ed-44c2-9919-37419870eac4
- date added to LUP
- 2023-10-30 09:33:08
- date last changed
- 2023-11-21 23:49:13
@article{0cc0dc58-f2ed-44c2-9919-37419870eac4, abstract = {{In this article, we present an experimental study of microwave resonators made out of Josephson junctions. The junctions are embedded in a transmission line geometry so that they increase the inductance per length for the line. By comparing two devices with different input/output coupling strengths, we show that the coupling capacitors, however, add a significant amount to the total capacitance of the resonator. This makes the resonators with high coupling capacitance to act rather as lumped element resonators with inductance from the junctions and capacitance from the end sections. Based on a circuit analysis, we show that the input and output couplings of the resonator are limited to a maximum value of ω_rZ_0/4Z_r, where ωr is the resonance frequency and Z_0 and Z_r are the characteristic impedances of the input/output lines and the resonator, respectively.}}, author = {{Ranni, Antti and Havir, Harald and Haldar, Subhomoy and Maisi, Ville}}, issn = {{1077-3118}}, keywords = {{microwave; strong coupling; Josephson junction}}, language = {{eng}}, number = {{11}}, pages = {{114002--114002}}, publisher = {{American Institute of Physics (AIP)}}, series = {{Applied Physics Letters}}, title = {{High impedance Josephson junction resonators in the transmission line geometry}}, url = {{http://dx.doi.org/10.1063/5.0164323}}, doi = {{10.1063/5.0164323}}, volume = {{123}}, year = {{2023}}, }