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Modeling and Design of Superconducting Quantum Devices
Modeling and Design of Superconducting Quantum Devices
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103128
- ISBN
- 9798280747968
- DDC
- 530.1
- 서명/저자
- Modeling and Design of Superconducting Quantum Devices
- 발행사항
- [Sl] : Princeton University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 210 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Houck, Andrew A.
- 학위논문주기
- Thesis (Ph.D.)--Princeton University, 2025.
- 초록/해제
- 요약Superconducting quantum devices are a promising platform for quantum computing. In this dissertation, we introduce new approaches to design and analyze these systems, and demonstrate a novel type of superconducting Purcell filter.The first portion of this work centers on design methods for the quantization, decomposition, and extraction (from electromagnetic simulations) of lumped-element superconducting circuit models. Our procedures revolve around the network matrix, which encodes the connectivity of a circuit's inductive loops and capacitive nodes. We use the network matrix to demonstrate an algorithm for circuit quantization, giving novel predictions for the Hamiltonians of circuits with both Josephson junctions and quantum phase slip wires. We then show that by performing pivoting operations on the network matrix, we can decompose a superconducting circuit model into its simplest equivalent ``fundamental" form, in which the harmonic degrees of freedom are separated out from the Josephson junctions and phase slip wires. Finally, we illustrate how to extract an exact, transformerless circuit model from electromagnetic simulations of a device's hybrid admittance/impedance response matrix, by matching the lumped circuit's network matrix to the network topology of the physical layout.In the second portion of this dissertation, we introduce and demonstrate a new type of wideband superconducting Purcell filter, which is employed to prevent qubit information from decaying into external lines, while maintaining external coupling to readout transitions. By placing the readout resonator frequencies in a "linewidth plateau" below the resonance frequency of the filter, our design allows for strong qubit decay protection and nearly constant external coupling across a wide readout bandwidth. We illustrate the theory behind our method, and then present the design and measurement of a device that includes an on-chip linewidth-plateau Purcell filter. We show how the filter protects a frequency-tunable transmon qubit from external decay, and measure the linewidths of resonators with resonance frequencies lying in the theoretically-predicted linewidth plateau, comparing the results to those of numerical simulations.
- 일반주제명
- Quantum physics
- 일반주제명
- Electromagnetics
- 일반주제명
- Applied physics
- 일반주제명
- Theoretical physics
- 키워드
- Device design
- 키워드
- Lumped element
- 키워드
- Purcell filter
- 키워드
- Qubit
- 키워드
- Superconducting
- 기타저자
- Princeton University Electrical and Computer Engineering
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202103128
■006m o d
■007cr#unu||||||||
■020 ▼a9798280747968
■035 ▼a(MiAaPQ)AAI31939199
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530.1
■1001 ▼aSmitham, Basil Maduros.▼0(orcid)0009-0005-5358-4745
■24510▼aModeling and Design of Superconducting Quantum Devices
■260 ▼a[Sl]▼bPrinceton University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a210 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Houck, Andrew A.
■5021 ▼aThesis (Ph.D.)--Princeton University, 2025.
■520 ▼aSuperconducting quantum devices are a promising platform for quantum computing. In this dissertation, we introduce new approaches to design and analyze these systems, and demonstrate a novel type of superconducting Purcell filter.The first portion of this work centers on design methods for the quantization, decomposition, and extraction (from electromagnetic simulations) of lumped-element superconducting circuit models. Our procedures revolve around the network matrix, which encodes the connectivity of a circuit's inductive loops and capacitive nodes. We use the network matrix to demonstrate an algorithm for circuit quantization, giving novel predictions for the Hamiltonians of circuits with both Josephson junctions and quantum phase slip wires. We then show that by performing pivoting operations on the network matrix, we can decompose a superconducting circuit model into its simplest equivalent ``fundamental" form, in which the harmonic degrees of freedom are separated out from the Josephson junctions and phase slip wires. Finally, we illustrate how to extract an exact, transformerless circuit model from electromagnetic simulations of a device's hybrid admittance/impedance response matrix, by matching the lumped circuit's network matrix to the network topology of the physical layout.In the second portion of this dissertation, we introduce and demonstrate a new type of wideband superconducting Purcell filter, which is employed to prevent qubit information from decaying into external lines, while maintaining external coupling to readout transitions. By placing the readout resonator frequencies in a "linewidth plateau" below the resonance frequency of the filter, our design allows for strong qubit decay protection and nearly constant external coupling across a wide readout bandwidth. We illustrate the theory behind our method, and then present the design and measurement of a device that includes an on-chip linewidth-plateau Purcell filter. We show how the filter protects a frequency-tunable transmon qubit from external decay, and measure the linewidths of resonators with resonance frequencies lying in the theoretically-predicted linewidth plateau, comparing the results to those of numerical simulations.
■590 ▼aSchool code: 0181.
■650 4▼aQuantum physics
■650 4▼aElectromagnetics
■650 4▼aApplied physics
■650 4▼aTheoretical physics
■653 ▼aDevice design
■653 ▼aLumped element
■653 ▼aPurcell filter
■653 ▼aQubit
■653 ▼aSuperconducting
■690 ▼a0599
■690 ▼a0753
■690 ▼a0215
■690 ▼a0607
■71020▼aPrinceton University▼bElectrical and Computer Engineering.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0181
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357085▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
