Investigation of superconducting transmission lines and tunnel junctions for detecting signals at frequencies above 1 THz.
- Authors: Kinev N.V.1, Chekushkin A.M.1, Khan F.V.1, Rudakov K.I.2
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Affiliations:
- Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences
- Editorial Ofice of the journal “Radio Engineering and Electronics”
- Issue: Vol 68, No 9 (2023)
- Pages: 858-863
- Section: К 70-ЛЕТИЮ ИРЭ ИМ. В.А. КОТЕЛЬНИКОВА РАН
- URL: https://journals.rcsi.science/0033-8494/article/view/138401
- DOI: https://doi.org/10.31857/S0033849423090127
- EDN: https://elibrary.ru/SCRCTR
- ID: 138401
Cite item
Abstract
Superconducting integrated circuits based on NbTiN/Al transmission lines at frequencies up to 1.1 THz have been developed and experimentally studied. Numerical modeling of two microcircuit topologies with an operating frequency range of 0.9…1.2 THz, containing a slot antenna, made in a thin NbTiN film and matched in output to a microstrip transmission line, and a tunnel junction of the “superconductor–insulator–superconductor” (SIS) type with an area of the order of 1 μm^2, acting as a terahertz detector. Experimental samples of the microcircuit were manufactured and tested; in the experimental setup, a backward wave lamp (BWL) with an output frequency of up to 1.1 THz was used as a source. A powerful pumping of the SIS detector was obtained, thereby demonstrating the applicability of the manufactured NbTiN/Al transmission lines for operation in superconducting circuits at frequencies above 750 GHz, where traditionally used Nb/Nb transmission lines do not operate due to high attenuation.
About the authors
N. V. Kinev
Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences
Email: nickolay@hitech.cplire.ru
Moscow, 125009 Russia
A. M. Chekushkin
Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences
Email: nickolay@hitech.cplire.ru
Moscow, 125009 Russia
F. V. Khan
Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences
Email: nickolay@hitech.cplire.ru
Moscow, 125009 Russia
K. I. Rudakov
Editorial Ofice of the journal “Radio Engineering and Electronics”
Author for correspondence.
Email: nickolay@hitech.cplire.ru
Moscow, 125009 Russia
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