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Tunable multi-quantum dots in InAs nanowires: Building Blocks for Su-Schrieffer-Heeger Topological Chains
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dc.contributor.advisor 서정필 -
dc.contributor.author Younghyun Kim -
dc.date.accessioned 2025-02-28T21:02:39Z -
dc.date.available 2025-02-28T21:02:39Z -
dc.date.issued 2025 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/58061 -
dc.identifier.uri http://dgist.dcollection.net/common/orgView/200000840960 -
dc.description InAs nanowire, quantum dot -
dc.description.tableofcontents List of Contents
Abstract i
List of contents ii
List of figures V

Ⅰ. Theoretical Background
1.1 Su-Schrieffer-Heeger (SSH) model 3
1.2 Quantum dots 10
1.2.1 Indium Arsenide (InAs) nanowire single-electron transistor 10
1.2.2 Single quantum dot 11
1.2.3 Double quantum dot 14
1.2.4 Quadruple quantum dot 19
1.3 Superconducting coplanar waveguide (SCPW) resonators 21
1.3.1 Microwave theory of transmission lines 22
1.3.2 Superconducting microwave resonators 24
1.3.3 Norton equivalent circuit 26
1.3.4 Quality factors of the resonator 28
1.3.5 Transmission coefficient 30

II. Fabrication
2.1 InAs nanowire single-electron transistor 32
2.1.1 Nanowire transfer and etching process 32
2.1.2 DC Device Fabrication 34
2.2 Nb Superconducting coplanar waveguide (SCPW) resonator 35
2.2.1 Coplanar waveguide resonator geometry 35
2.2.2 RF Device Fabrication 36

III. Measurement Techniques
3.1 Initial Characterization and Sample Preparation 39
3.2 Measurement Schematic 41
3.3 Low Temperature Measurement Setup 42
3.4 He-3 Refrigeration System 44

IV. Experiments Results
4.1 Multi-quantum dot (DC Device) Results 46
4.1.1 Single quantum dots 46
4.1.2 Double quantum dots 49
4.1.3 Triple quantum dot 51
4.1.4 Quadruple quantum dot 53
4.2 SCPW resonator (RF Device) Results 59
4.2.1 Characteristics of the RF Device 59
4.2.2 Interaction between the transistor and the resonator 62


V. Summary and Conclusion 64


Bibliography 65


Appendix

Fabrication Details and Recipes

A1. Wafer Characteristics of DC device
A2. Photo pad Fabrication
A3. Wafer Characteristics of RF device
A4. Resonator fabrication for measurements
A5. InAs transistor fabrication (DC & RF device)
A6. Designing using K-Layout and Layout Editor

Pre-Cooldown Sample Preparation

B1. Wire bonding
B2. He-3 Sample Exchange Procedure (Unloading and loading Sample)


Korean Summary 80
-
dc.format.extent 80 -
dc.language eng -
dc.publisher DGIST -
dc.title Tunable multi-quantum dots in InAs nanowires: Building Blocks for Su-Schrieffer-Heeger Topological Chains -
dc.title.alternative InAs 나노와이어의 조정 가능한 다중 양자점: Su-Schrieffer-Heeger 위상적 사슬을 위한 기초 구성 요소 -
dc.type Thesis -
dc.identifier.doi 10.22677/THESIS.200000840960 -
dc.description.degree Master -
dc.contributor.department Department of Physics and Chemistry -
dc.identifier.bibliographicCitation Younghyun Kim. (2025). Tunable multi-quantum dots in InAs nanowires: Building Blocks for Su-Schrieffer-Heeger Topological Chains. doi: 10.22677/THESIS.200000840960 -
dc.contributor.coadvisor Minkyung Jung -
dc.date.awarded 2025-02-01 -
dc.publisher.location Daegu -
dc.description.database dCollection -
dc.citation XT.MM 김64 202502 -
dc.date.accepted 2025-01-20 -
dc.contributor.alternativeDepartment 화학물리학과 -
dc.subject.keyword InAs nanowire, quantum dot -
dc.contributor.affiliatedAuthor Younghyun Kim -
dc.contributor.affiliatedAuthor Jungpil Seo -
dc.contributor.affiliatedAuthor Minkyung Jung -
dc.contributor.alternativeName 김영현 -
dc.contributor.alternativeName Jungpil Seo -
dc.contributor.alternativeName 정민경 -
dc.rights.embargoReleaseDate 2028-02-28 -
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