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Exploring Fluxonium-Based Quantum Computing
Exploring Fluxonium-Based Quantum Computing
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104835
- ISBN
- 9798293835621
- DDC
- 530.1
- 저자명
- Lin, Wei-Ju.
- 서명/저자
- Exploring Fluxonium-Based Quantum Computing
- 발행사항
- [Sl] : University of Maryland, College Park, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 139 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Sardashti, Kasra;Sau, Jay D.
- 학위논문주기
- Thesis (Ph.D.)--University of Maryland, College Park, 2025.
- 초록/해제
- 요약Fluxonium qubit is a promising elementary building block for quantum information processing due to its long coherence time combined with a strong anharmonicity. In this thesis, we first introduce a novel fluxonium qubit operating at zero magnetic field with high coherence. We implement and characterize single-qubit gates with an average gate fidelity of 99.93%, extracted from randomized benchmarking. This qubit serves as a ready-to-use superconducting qubit that operates in the frequency range of conventional transmons and exhibits stronger anharmonicity.Next, we implement a 60 ns direct CNOT gate on two inductively coupled fluxoniums, which behave almost exactly like a pair of transversely coupled spin-1/2 systems. Notably, the typically undesirable static ZZ term, arising from non-computational transitions, is nearly absent even in the presence of strong qubit-qubit hybridization. The CNOT gate fidelity, estimated via randomized benchmarking, reaches 99.94%. Furthermore, this fidelity remains above 99.9% over a span of 24 days without any recalibration between measurements. Compared with the 99.96% fidelity of a 60 ns identity gate, our results constrain non-decoherence-related errors during logical operations to as low as 2 x 10−4. This work adds a simple and robust two-qubit gate to the still relatively small family of "beyond three nines" gates on superconducting qubits.
- 일반주제명
- Quantum physics
- 일반주제명
- Condensed matter physics
- 일반주제명
- Physics
- 키워드
- Fluxonium qubit
- 키워드
- Quantum gates
- 기타저자
- University of Maryland, College Park Physics
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798293835621
■035 ▼a(MiAaPQ)AAI32171387
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530.1
■1001 ▼aLin, Wei-Ju.
■24510▼aExploring Fluxonium-Based Quantum Computing
■260 ▼a[Sl]▼bUniversity of Maryland, College Park▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a139 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Sardashti, Kasra;Sau, Jay D.
■5021 ▼aThesis (Ph.D.)--University of Maryland, College Park, 2025.
■520 ▼aFluxonium qubit is a promising elementary building block for quantum information processing due to its long coherence time combined with a strong anharmonicity. In this thesis, we first introduce a novel fluxonium qubit operating at zero magnetic field with high coherence. We implement and characterize single-qubit gates with an average gate fidelity of 99.93%, extracted from randomized benchmarking. This qubit serves as a ready-to-use superconducting qubit that operates in the frequency range of conventional transmons and exhibits stronger anharmonicity.Next, we implement a 60 ns direct CNOT gate on two inductively coupled fluxoniums, which behave almost exactly like a pair of transversely coupled spin-1/2 systems. Notably, the typically undesirable static ZZ term, arising from non-computational transitions, is nearly absent even in the presence of strong qubit-qubit hybridization. The CNOT gate fidelity, estimated via randomized benchmarking, reaches 99.94%. Furthermore, this fidelity remains above 99.9% over a span of 24 days without any recalibration between measurements. Compared with the 99.96% fidelity of a 60 ns identity gate, our results constrain non-decoherence-related errors during logical operations to as low as 2 x 10−4. This work adds a simple and robust two-qubit gate to the still relatively small family of "beyond three nines" gates on superconducting qubits.
■590 ▼aSchool code: 0117.
■650 4▼aQuantum physics
■650 4▼aCondensed matter physics
■650 4▼aPhysics
■653 ▼aFluxonium qubit
■653 ▼aQuantum computing
■653 ▼aQuantum gates
■653 ▼aQuantum information
■653 ▼aSuperconducting qubit
■690 ▼a0599
■690 ▼a0611
■690 ▼a0605
■71020▼aUniversity of Maryland, College Park▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0117
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359105▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
