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Understanding and minimizing resonance frequency deviations on a 4-in. kilo-pixel kinetic inductance detector array

Shu, S. and Calvo, M. and Goupy, J. and Leclercq, S. and Catalano, A. and Bideaud, A. and Monfardini, A. and Driessen, E. F. C. (2021) Understanding and minimizing resonance frequency deviations on a 4-in. kilo-pixel kinetic inductance detector array. Applied Physics Letters, 119 (9). Art. No. 092601. ISSN 0003-6951. doi:10.1063/5.0058335.

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One of the advantages of kinetic inductance detectors is their intrinsic frequency domain multiplexing capability. However, fabrication imperfections usually give rise to resonance frequency deviations, which create frequency collision and limit the array yield. Here, we study the resonance frequency deviation of a 4-in. kilo-pixel lumped-element kinetic inductance detector (LEKID) array using optical mapping. Using the measured resonator dimensions and film thickness, the fractional deviation can be explained within ±25 × 10⁻³, whereas the residual deviation is due to variation of electric film properties. Using the capacitor trimming technique, the fractional deviation is decreased by a factor of 14. The yield of the trimming process is found to be 97%. The mapping yield, measured under a 110 K background, is improved from 69% to 76%, which can be further improved to 81% after updating our readout system. With the improvement in yield, the capacitor trimming technique may benefit future large-format LEKID arrays.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Shu, S.0000-0002-6370-2101
Catalano, A.0000-0002-7679-6274
Monfardini, A.0000-0001-5337-5533
Driessen, E. F. C.0000-0002-7540-1103
Alternate Title:Understanding and minimizing resonance frequency deviations on a 4-inch kilo-pixel kinetic inductance detector array
Additional Information:© 2021 Author(s). Published under an exclusive license by AIP Publishing. Submitted: 28 May 2021. Accepted: 18 August 2021. Published Online: 30 August 2021. See the supplementary material for the design in detail. The authors thank D. Billon-Pierron and A. Barbier for experimental help and K. F. Schuster for useful discussions. This work has been partially funded by LabEx FOCUS ANR-1-LABX-0013. DATA AVAILABILITY. The data that support the findings of this study are available from the corresponding author upon reasonable request.
Funding AgencyGrant Number
Agence Nationale pour la Recherche (ANR)ANR-1-LABX-0013
Issue or Number:9
Record Number:CaltechAUTHORS:20210927-225706806
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111079
Deposited By: George Porter
Deposited On:28 Sep 2021 14:30
Last Modified:28 Sep 2021 14:30

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