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Resonant Quantum Sensing and Emission in Nanoscale Systems
Resonant Quantum Sensing and Emission in Nanoscale Systems
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103528
- ISBN
- 9798288863356
- DDC
- 530
- 서명/저자
- Resonant Quantum Sensing and Emission in Nanoscale Systems
- 발행사항
- [Sl] : University of California, Berkeley, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 105 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: Wang, Feng.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Berkeley, 2025.
- 초록/해제
- 요약Studies of sensitive quantum systems are almost always limited by considerations of signals and noise. A crucial tool in the scientist's toolbox when approaching these systems is a strong understanding of resonant excitation, where energetic alignment between applied signals and levels in the studied system yields large increases in signal to noise ratio. This thesis explores two different nanoscale systems through this unifying approach. I will first detail the engineering of nanoscale piezoelectric resonators for high-resolution scanning probe measurements. Many atomic and subatomic resolution atomic force microcopy studies have been published in the past two decades. The probes at the heart of these studies, however, are not state-of-the-art resonators when compared to the advances in MEMS over the same period of time. Higher quality factor (Q) and operational frequency (f0) resonators confer significantly reduced noise levels and improved resolution to AFM systems. I will detail the design, simulation, fabrication, and measurement of high Q and f0 piezoelectric resonators made from LiNbO3. LiNbO3 naturally offers a great platform for such resonators with large piezoelectric coupling and acoustic velocities. These resonators achieve noise figures multiple orders of magnitude higher than existing probes for AFM and offer to greatly improve the ease of achieving subatomic resolution and high speed scanning probe measurements.I will then discuss resonances in systems of quantum single-photon emitters in monolayer tungsten diselenide (WSe2). Monolayer WSe2 has shown promise as a quantum light source due to its exciton-mediated single photon emission combined with its potential to be integrated into a variety of on-chip photonic platforms. These applications have been hampered due to a lack of understanding of the defect species involved in the single-photon emission mechanism. We use photoluminescence excitation to directly probe the energy levels associated with these defects while monitoring the quantum emission, finding that many key properties of the single-photon emission are directly affected by the excitation energy. This reveals the presence and nature of complex structures of defect levels which mediate the properties of WSe2's quantum emission.
- 일반주제명
- Physics
- 일반주제명
- Nanotechnology
- 일반주제명
- Condensed matter physics
- 일반주제명
- Applied physics
- 키워드
- 2D materials
- 키워드
- Quantum systems
- 기타저자
- University of California, Berkeley Applied Science & Technology
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202103528
■006m o d
■007cr#unu||||||||
■020 ▼a9798288863356
■035 ▼a(MiAaPQ)AAI32039526
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aSanborn, Collin Richard.
■24510▼aResonant Quantum Sensing and Emission in Nanoscale Systems
■260 ▼a[Sl]▼bUniversity of California, Berkeley▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a105 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: Wang, Feng.
■5021 ▼aThesis (Ph.D.)--University of California, Berkeley, 2025.
■520 ▼aStudies of sensitive quantum systems are almost always limited by considerations of signals and noise. A crucial tool in the scientist's toolbox when approaching these systems is a strong understanding of resonant excitation, where energetic alignment between applied signals and levels in the studied system yields large increases in signal to noise ratio. This thesis explores two different nanoscale systems through this unifying approach. I will first detail the engineering of nanoscale piezoelectric resonators for high-resolution scanning probe measurements. Many atomic and subatomic resolution atomic force microcopy studies have been published in the past two decades. The probes at the heart of these studies, however, are not state-of-the-art resonators when compared to the advances in MEMS over the same period of time. Higher quality factor (Q) and operational frequency (f0) resonators confer significantly reduced noise levels and improved resolution to AFM systems. I will detail the design, simulation, fabrication, and measurement of high Q and f0 piezoelectric resonators made from LiNbO3. LiNbO3 naturally offers a great platform for such resonators with large piezoelectric coupling and acoustic velocities. These resonators achieve noise figures multiple orders of magnitude higher than existing probes for AFM and offer to greatly improve the ease of achieving subatomic resolution and high speed scanning probe measurements.I will then discuss resonances in systems of quantum single-photon emitters in monolayer tungsten diselenide (WSe2). Monolayer WSe2 has shown promise as a quantum light source due to its exciton-mediated single photon emission combined with its potential to be integrated into a variety of on-chip photonic platforms. These applications have been hampered due to a lack of understanding of the defect species involved in the single-photon emission mechanism. We use photoluminescence excitation to directly probe the energy levels associated with these defects while monitoring the quantum emission, finding that many key properties of the single-photon emission are directly affected by the excitation energy. This reveals the presence and nature of complex structures of defect levels which mediate the properties of WSe2's quantum emission.
■590 ▼aSchool code: 0028.
■650 4▼aPhysics
■650 4▼aNanotechnology
■650 4▼aCondensed matter physics
■650 4▼aApplied physics
■653 ▼a2D materials
■653 ▼aAtomic force microscopy
■653 ▼aQuantum systems
■653 ▼aPiezoelectric materials
■653 ▼aSingle photon emitter
■653 ▼aNanoscale systems
■690 ▼a0605
■690 ▼a0652
■690 ▼a0611
■690 ▼a0215
■71020▼aUniversity of California, Berkeley▼bApplied Science & Technology.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0028
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357551▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
