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Using Microwave Resonators to Study ...

Brewster, Jacob F.,

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Using Microwave Resonators to Study Dielectric Loss, Materials for Quantum Information, 2D Van Der Waals Materials, and Nanomaterials /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Using Microwave Resonators to Study Dielectric Loss, Materials for Quantum Information, 2D Van Der Waals Materials, and Nanomaterials // Jacob F Brewster.
Author:	Brewster, Jacob F.,
Description:	1 electronic resource (95 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
Contained By:	Dissertations Abstracts International84-12B.
Subject:	Physics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30527189
ISBN:	9798379724160

Using Microwave Resonators to Study Dielectric Loss, Materials for Quantum Information, 2D Van Der Waals Materials, and Nanomaterials /
Brewster, Jacob F.,

Using Microwave Resonators to Study Dielectric Loss, Materials for Quantum Information, 2D Van Der Waals Materials, and Nanomaterials /Jacob F Brewster. - 1 electronic resource (95 pages)

Source: Dissertations Abstracts International, Volume: 84-12, Section: B.

A review of superconducting coplanar waveguide (CPW) S21 transmission through high quality (Qi~106) quarterwave resonators is detailed. By measuring and predicting the resonance frequency of high Qi devices made of Nb on crystalline Si, the dielectric constant of an aluminum passivated orthocarborane powder deposited on top of the resonators is measured by two methods. The first method requires accurate predicting of the Nb on Si resonance frequency (εR2 = 1.461 + .086), while the 2nd method is more reliable and relies purely on experimental techniques (εR2 = 1.295 + .007). The bare Nb on Si circuit samples were also measured before and after heating in a chemical vapor deposition chamber. It was found that the oxidation of Nb at these temperatures makes it unsuitable for any device that needs on-site annealing. CPWs with coupled quarterwave resonators of high kinetic inductance (AlOx) and Qi were also measured and reported. Resonators with tunability through DC current bias were also fabricated and reported, showing resonance frequency shifting ~4% for NbTiN, ~.4% for s-TiN, and ~.1% for multilayered Ti/TiN. Both NbTiN and s-TiN circuits maintained their signal shape through all shifts.A transmon qubit was also measured in an adiabatic demagnetization refrigerator. Here the T2 coherence times were estimated to be above 3.9*10-8s and were not significantly affected by molecular O2 saturation.

English

ISBN: 9798379724160Subjects--Topical Terms:

516296
Physics.
Subjects--Index Terms:

Coplanar waveguide

Using Microwave Resonators to Study Dielectric Loss, Materials for Quantum Information, 2D Van Der Waals Materials, and Nanomaterials /
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100 1 $a Brewster, Jacob F., $e author. $3 3765786
245 1 0 $a Using Microwave Resonators to Study Dielectric Loss, Materials for Quantum Information, 2D Van Der Waals Materials, and Nanomaterials / $c Jacob F Brewster.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 1 electronic resource (95 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
500 $a Advisors: Wisbey, David Committee members: Kuljanishvilli, Irma; Jelliss, Paul; Murch, Kater.
502 $b Ph.D. $c Saint Louis University $d 2023.
520 $a A review of superconducting coplanar waveguide (CPW) S21 transmission through high quality (Qi~106) quarterwave resonators is detailed. By measuring and predicting the resonance frequency of high Qi devices made of Nb on crystalline Si, the dielectric constant of an aluminum passivated orthocarborane powder deposited on top of the resonators is measured by two methods. The first method requires accurate predicting of the Nb on Si resonance frequency (εR2 = 1.461 + .086), while the 2nd method is more reliable and relies purely on experimental techniques (εR2 = 1.295 + .007). The bare Nb on Si circuit samples were also measured before and after heating in a chemical vapor deposition chamber. It was found that the oxidation of Nb at these temperatures makes it unsuitable for any device that needs on-site annealing. CPWs with coupled quarterwave resonators of high kinetic inductance (AlOx) and Qi were also measured and reported. Resonators with tunability through DC current bias were also fabricated and reported, showing resonance frequency shifting ~4% for NbTiN, ~.4% for s-TiN, and ~.1% for multilayered Ti/TiN. Both NbTiN and s-TiN circuits maintained their signal shape through all shifts.A transmon qubit was also measured in an adiabatic demagnetization refrigerator. Here the T2 coherence times were estimated to be above 3.9*10-8s and were not significantly affected by molecular O2 saturation.
546 $a English
590 $a School code: 0193
650 4 $a Physics. $3 516296
650 4 $a Applied physics. $3 3343996
650 4 $a Materials science. $3 543314
650 4 $a Electrical engineering. $3 649834
653 $a Coplanar waveguide
653 $a Quarterwave resonators
653 $a High Qi devices
653 $a Resonance frequency
690 $a 0605
690 $a 0544
690 $a 0794
690 $a 0215
710 2 $a Saint Louis University. $b Integrated and Applied Sciences. $e degree granting institution. $3 3765787
720 1 $a Wisbey, David $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 84-12B.
790 $a 0193
791 $a Ph.D.
792 $a 2023
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30527189