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Analysis and performance of lumped-element kinetic inductance detectors for W-band

Abstract: Lumped-element superconducting resonators are a promising technology for their use in millimeter-wave observations and quantum computing applications that require large arrays of extremely sensitive detectors. Among them, lumped-element kinetic inductance detectors (LEKIDs) have shown good performance in the submillimeter band in several earth-based telescopes. In this work, LEKIDs for their use as millimeter-wave receivers of astronomical applications are presented. LEKID arrays using a thin bilayer of superconducting titanium/aluminum (Ti/Al), deposited on the silicon substrate, have been designed and fabricated. The design of a dual-polarization LEKID with the goal of detection at the W -band for two orthogonal polarizations is described and a fabricated array has demonstrated absorption at ambient temperature. Also, an approximate design methodology of the coupling parameter for LEKIDs' readout, essential for dynamic range optimization of the detector under millimeter-wave radiation, is proposed. In addition, the resonance characteristics and coupling factor of the fabricated superconducting resonators using high-quality internal factor Qi under cryogenic temperatures have been analyzed. The design guidelines in this work are applicable to other LEKID arrays, and the presented superconducting Ti/Al thin-film LEKIDs can be used in future receiver arrays in the millimeter bands.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Aja B., de Ory M.C., de la Fuente L., Artal E., Pascual J.P., Magaz M.T., Granados D., Gomez A.,

 Fuente: IEEE Transactions on Microwave Theory and Techniques, 2021, 69(1), 578-589

Editorial: Institute of Electrical and Electronics Engineers Inc.

 Fecha de publicación: 01/01/2021

Nº de páginas: 12

Tipo de publicación: Artículo de Revista

DOI: 10.1109/TMTT.2020.3038777

ISSN: 0018-9480,1557-9670

Proyecto español: ESP2017-83921-C2-2-R ; ESP2017-86582-C4-1-R ; ESP2017-86582-C4- 3-R ; ESP2017-92706-EXP ; AYA2017-92153-EXP

Url de la publicación: https://doi.org/10.1109/TMTT.2020.3038777

Autores/as

CALERO DE ORY, MARINA

JUAN PABLO PASCUAL GUTIERREZ

MAGAZ PÉREZ, MARÍA TERESA

GRANADOS RUIZ, DANIEL

GÓMEZ GUTIÉRREZ, ALICIA