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Enhanced Cooperativity in a Near-Quantum Microwave-to-Optical Transducer
Enhanced Cooperativity in a Near-Quantum Microwave-to-Optical Transducer
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211153034
- ISBN
- 9798346876762
- DDC
- 530
- 저자명
- Mittal, Sarang.
- 서명/저자
- Enhanced Cooperativity in a Near-Quantum Microwave-to-Optical Transducer
- 발행사항
- [Sl] : University of Colorado at Boulder, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 208 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
- 주기사항
- Advisor: Lehnert, Konrad W.
- 학위논문주기
- Thesis (Ph.D.)--University of Colorado at Boulder, 2024.
- 초록/해제
- 요약One of the main thrusts of quantum science over the past few decades has been the development of quantum networks for the purposes of secure communication, enhanced detector sensitivity, and advanced computing. Realizing such a network of superconducting quantum processors that communicate via optical fibers would leverage the high fidelity quantum signal processing of superconducting circuits and the thermal robustness of infrared light but requires a transducer capable of connecting these two sections of the electromagnetic spectrum separated by five orders of magnitude in energy. This thesis explores the optimization of a transducer architecture where the mechanical mode of a Si3N4 membrane mediates the coupling of a superconducting lumped-element circuit and a Fabry-Perot optical cavity. We aim to maximize the coupling of these three harmonic oscillator to each other while shielding them from noisy processes that would decohere quantum signals. This architecture has led to transducers with unparalleled efficiency and continuous operation. Enhanced cooperativity between the optical cavity and mechanical oscillator enabled optically-detected readout of a superconducting qubit and optomechanical ground state cooling with negligible laser-induced heating of the superconducting qubit and microwave circuit. To surpass the threshold for quantum-enabled operation, we subsequently improved the cooperativity between the microwave circuit and mechanical oscillator by reducing the microwave loss and noise from two-level-system-like defects in the Si3N4 dielectric. When combined with enhanced coupling between the circuit and membrane or improved mechanical isolation, we project that this architecture will be capable of transducing quantum signals between the microwave and optical regimes with a signal-to-noise greater than one.
- 일반주제명
- Physics
- 일반주제명
- Applied physics
- 일반주제명
- Quantum physics
- 일반주제명
- Nanotechnology
- 키워드
- Quantum network
- 키워드
- Two-level system
- 기타저자
- University of Colorado at Boulder Physics
- 기본자료저록
- Dissertations Abstracts International. 86-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211153034
■006m o d
■007cr#unu||||||||
■020 ▼a9798346876762
■035 ▼a(MiAaPQ)AAI31637412
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aMittal, Sarang.▼0(orcid)0000-0002-1025-5782
■24510▼aEnhanced Cooperativity in a Near-Quantum Microwave-to-Optical Transducer
■260 ▼a[Sl]▼bUniversity of Colorado at Boulder▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a208 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-06, Section: B.
■500 ▼aAdvisor: Lehnert, Konrad W.
■5021 ▼aThesis (Ph.D.)--University of Colorado at Boulder, 2024.
■520 ▼aOne of the main thrusts of quantum science over the past few decades has been the development of quantum networks for the purposes of secure communication, enhanced detector sensitivity, and advanced computing. Realizing such a network of superconducting quantum processors that communicate via optical fibers would leverage the high fidelity quantum signal processing of superconducting circuits and the thermal robustness of infrared light but requires a transducer capable of connecting these two sections of the electromagnetic spectrum separated by five orders of magnitude in energy. This thesis explores the optimization of a transducer architecture where the mechanical mode of a Si3N4 membrane mediates the coupling of a superconducting lumped-element circuit and a Fabry-Perot optical cavity. We aim to maximize the coupling of these three harmonic oscillator to each other while shielding them from noisy processes that would decohere quantum signals. This architecture has led to transducers with unparalleled efficiency and continuous operation. Enhanced cooperativity between the optical cavity and mechanical oscillator enabled optically-detected readout of a superconducting qubit and optomechanical ground state cooling with negligible laser-induced heating of the superconducting qubit and microwave circuit. To surpass the threshold for quantum-enabled operation, we subsequently improved the cooperativity between the microwave circuit and mechanical oscillator by reducing the microwave loss and noise from two-level-system-like defects in the Si3N4 dielectric. When combined with enhanced coupling between the circuit and membrane or improved mechanical isolation, we project that this architecture will be capable of transducing quantum signals between the microwave and optical regimes with a signal-to-noise greater than one.
■590 ▼aSchool code: 0051.
■650 4▼aPhysics
■650 4▼aApplied physics
■650 4▼aQuantum physics
■650 4▼aNanotechnology
■653 ▼aCavity optomechanics
■653 ▼aQuantum network
■653 ▼aQuantum transduction
■653 ▼aSuperconducting circuits
■653 ▼aTwo-level system
■690 ▼a0605
■690 ▼a0599
■690 ▼a0652
■690 ▼a0215
■71020▼aUniversity of Colorado at Boulder▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g86-06B.
■790 ▼a0051
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164712▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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