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Dynamical Control of Many-Body Interactions in Driven Quantum Matter
Dynamical Control of Many-Body Interactions in Driven Quantum Matter
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104748
- ISBN
- 9798290657158
- DDC
- 530
- 서명/저자
- Dynamical Control of Many-Body Interactions in Driven Quantum Matter
- 발행사항
- [Sl] : California Institute of Technology, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 242 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: Refael, Gil.
- 학위논문주기
- Thesis (Ph.D.)--California Institute of Technology, 2025.
- 초록/해제
- 요약Strongly driven Floquet systems have emerged as promising platforms for exotic non-equilibrium physics, but their instability to heating motivates practical questions about how Floquet engineering can be useful. Although drive-induced heating is often attributed to interactions, this thesis adopts a different perspective, identifying regimes where dissipative many-body dynamics can stabilize Floquet physics and define remarkable new drive-tunable properties. This principle enables highly tunable many-body steady states with minimal heating, leading to a novel regime where drive control over single-particle Floquet states can extend to many-body interactions. Our theoretical and experimental results in Parts II and III center around two themes. The first theme focuses on discovering controllable and stable many-body Floquet states. The second explores further into what the future holds- envisioning the prospects for unconventional Floquet physics with nontraditional driving fields and three-dimensional materials.Part II of this thesis leverages kinematic constraints on low-dimensional manybody scattering as new principles for tuning and stabilizing Floquet phases. First, we predict that a circularly polarized laser can drive slow electrons of moire systems into a subsonic regime where they decouple from the intrinsic 2D acoustic phonons of the system. This "slow-electron regime" enables optical control over the steady-state occupation of topological Floquet states and the resulting anomalous Hall conductivity. Second, we present experimental transport signatures of steady Floquet physics in graphene irradiated by a continuous-wave laser. Our experiment, performed at 3-4 K lattice temperatures with lasers off-resonant to optical phonons, creates electron-phonon scattering bottlenecks that stabilize persistent lowtemperature phases with light-induced longitudinal transport characteristics. The long-lived many-body phase represents the first experimental signatures of steady Floquet physics in a metallic solid.Part III presents emerging opportunities for many-body Floquet engineering beyond traditional optically-driven, low-dimensional materials. We first explore beyondoptical driving fields, revealing the emergence of quantized charge transport in 1D systems driven by coherent phonons. Incoherent phonons relax electrons into a topological spatiotemporal Floquet state with quantized group velocity set by the coherent phonon, realizing topological charge pumping in a highly non-adiabatic setting. Finally, we address the topological effects of time-periodic drives beyond low-dimensional systems, revealing that THz-frequency, circularly polarized light can induce topological chiral plasmons in Weyl semimetals with band anisotropy, broken time-reversal symmetry, and broken inversion symmetry.The theoretical and experimental work in this thesis represent key progress towards realizing persistent Floquet physics for diverse applications in quantum device engineering.
- 일반주제명
- Physics
- 일반주제명
- Electrons
- 일반주제명
- Nanowires
- 일반주제명
- Writing
- 일반주제명
- Lasers
- 일반주제명
- Symmetry
- 일반주제명
- Schrodinger equation
- 일반주제명
- Energy
- 일반주제명
- Graphene
- 기타저자
- California Institute of Technology Physics Mathematics and Astronomy
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017358760
■00520260202104748
■006m o d
■007cr#unu||||||||
■020 ▼a9798290657158
■035 ▼a(MiAaPQ)AAI32151306
■035 ▼a(MiAaPQ)Caltech17150
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aYang, Christopher Kai-Chen.
■24510▼aDynamical Control of Many-Body Interactions in Driven Quantum Matter
■260 ▼a[Sl]▼bCalifornia Institute of Technology▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a242 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: Refael, Gil.
■5021 ▼aThesis (Ph.D.)--California Institute of Technology, 2025.
■520 ▼aStrongly driven Floquet systems have emerged as promising platforms for exotic non-equilibrium physics, but their instability to heating motivates practical questions about how Floquet engineering can be useful. Although drive-induced heating is often attributed to interactions, this thesis adopts a different perspective, identifying regimes where dissipative many-body dynamics can stabilize Floquet physics and define remarkable new drive-tunable properties. This principle enables highly tunable many-body steady states with minimal heating, leading to a novel regime where drive control over single-particle Floquet states can extend to many-body interactions. Our theoretical and experimental results in Parts II and III center around two themes. The first theme focuses on discovering controllable and stable many-body Floquet states. The second explores further into what the future holds- envisioning the prospects for unconventional Floquet physics with nontraditional driving fields and three-dimensional materials.Part II of this thesis leverages kinematic constraints on low-dimensional manybody scattering as new principles for tuning and stabilizing Floquet phases. First, we predict that a circularly polarized laser can drive slow electrons of moire systems into a subsonic regime where they decouple from the intrinsic 2D acoustic phonons of the system. This "slow-electron regime" enables optical control over the steady-state occupation of topological Floquet states and the resulting anomalous Hall conductivity. Second, we present experimental transport signatures of steady Floquet physics in graphene irradiated by a continuous-wave laser. Our experiment, performed at 3-4 K lattice temperatures with lasers off-resonant to optical phonons, creates electron-phonon scattering bottlenecks that stabilize persistent lowtemperature phases with light-induced longitudinal transport characteristics. The long-lived many-body phase represents the first experimental signatures of steady Floquet physics in a metallic solid.Part III presents emerging opportunities for many-body Floquet engineering beyond traditional optically-driven, low-dimensional materials. We first explore beyondoptical driving fields, revealing the emergence of quantized charge transport in 1D systems driven by coherent phonons. Incoherent phonons relax electrons into a topological spatiotemporal Floquet state with quantized group velocity set by the coherent phonon, realizing topological charge pumping in a highly non-adiabatic setting. Finally, we address the topological effects of time-periodic drives beyond low-dimensional systems, revealing that THz-frequency, circularly polarized light can induce topological chiral plasmons in Weyl semimetals with band anisotropy, broken time-reversal symmetry, and broken inversion symmetry.The theoretical and experimental work in this thesis represent key progress towards realizing persistent Floquet physics for diverse applications in quantum device engineering.
■590 ▼aSchool code: 0037.
■650 4▼aPhysics
■650 4▼aElectrons
■650 4▼aNanowires
■650 4▼aWriting
■650 4▼aLasers
■650 4▼aSymmetry
■650 4▼aSchrodinger equation
■650 4▼aEnergy
■650 4▼aGraphene
■690 ▼a0791
■690 ▼a0605
■71020▼aCalifornia Institute of Technology▼bPhysics, Mathematics and Astronomy.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0037
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358760▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


