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BL
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| Record Number
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859494
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| Main Entry
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Palacios-Berraquero, Carmen
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| Title & Author
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Quantum confined excitons in 2-dimensional materials /\ Carmen Palacios-Berraquero.
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| Publication Statement
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Cham, Switzerland :: Springer,, 2018.
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| Series Statement
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Springer theses,
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| Page. NO
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1 online resource (xii, 116 pages) :: illustrations (some color)
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| ISBN
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3030014827
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: 9783030014827
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3030014819
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9783030014810
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| Notes
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"Doctoral thesis accepted by the University of Cambridge, Cambridge, UK."
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| Bibliographies/Indexes
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Includes bibliographical references.
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| Contents
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Intro; Supervisor's Foreword; Preface; Acknowledgements; Contents; 1 Introduction: 2d-Based Quantum Technologies; 1.1 Semiconducting Group-VI Transition Metal Dichalcogenides; 1.1.1 Excitons in 2d-TMDs; 1.1.2 Spin-Dark and Momentum-Dark Excitons; 1.1.3 Strain-Related Effects; 1.2 Van der Waals Materials and Heterostructures; 1.3 Quantum Information Technologies Using Single-Photons; 1.3.1 Single-Photons in 2d; 1.3.2 Characteristics of 2d-Based Quantum Emitting Sites; References; 2 Experimental Techniques; 2.1 Single-Photon Optics; 2.1.1 Confocal Microscopy; 2.1.2 Photon-Photon Correlation.
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2.1.3 Tailored Spectral Filtering2.2 Processing of 2d Materials and Devices; 2.2.1 Fabrication of 2d-Heterostructures; 2.2.2 All-Dry Viscoelastic Transfer; References; 3 Deterministic Arrays of Single-Photon Sources; 3.1 Motivation: Scalable Quantum Technologies; 3.2 Results: Achieving Quantum Confinement; 3.2.1 Nanopillar-TMD Sample Fabrication; 3.2.2 Deterministic 1L-WSe2-QDs: Optical Measurements; 3.2.3 Deterministic 1L-WS2-QDs: Optical Measurements; 3.3 Discussion; 3.4 Impact; 3.5 Conclusions and Outlook; References; 4 Atomically-Thin Quantum Light Emitting Diodes.
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4.1 Motivation: Electrically-Triggered Single Photons and Next-Generation Devices4.2 Results: Atomically Thin Quantum Light Emitting Diodes; 4.2.1 Design of a TMD-Based QLED Device; 4.2.2 Electrically Triggered Quantum Light in a WSe2-Based QLED; 4.2.3 All-Electrical Generation of Single-Photon Emission in WS2; 4.3 Discussion and Impact; 4.4 Conclusions and Outlook; References; 5 2d Quantum Light-Matter Interfaces; 5.1 Motivation: Hybrid Light-Matter Quantum Networks; 5.1.1 Charge-Trapping in InGaAs-QDs: Selection Rules and Devices; 5.1.2 TMD-Based Spin-Valley Qubits.
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5.2 Results: Capturing Single-Charges in TMD-QDs5.2.1 Heterostructure Design and Fabrication; 5.2.2 Voltage-Dependent Photoluminescence Spectra; 5.2.3 Polarisation Conservation Effect in Charged Dots; 5.3 Discussion; 5.4 Conclusions and Outlook; References; 6 Conclusions and Outlook; References; Appendix Curriculum Vitae.
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| Abstract
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This book presents the first established experimental results of an emergent field: 2-dimensional materials as platforms for quantum technologies, specifically through the optics of quantum-confined excitons. It also provides an extensive review of the literature from a number of disciplines that informed the research, and introduces the materials of focus - 2d Transition Metal Dichalcogenides (2d-TMDs) - in detail, discussing electronic and chemical structure, excitonic behaviour and response to strain. This is followed by a brief overview of quantum information technologies, including concepts such as single-photon sources and quantum networks. The methods chapter addresses quantum optics techniques and 2d-material processing, while the results section shows the development of a method to deterministically create quantum dots (QDs) in the 2d-TMDs, which can trap single-excitons; the fabrication of atomically thin quantum light-emitting diodes to induce all-electrical single-photon emission from the QDs, and lastly, the use of devices to controllably trap single-spins in the QDs -the first step towards their use as optically-addressable matter qubits.
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| Subject
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Quantum dots.
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Semiconductors-- Materials.
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Condensed matter physics (liquid state solid state physics)
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Electronic devices materials.
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Optical physics.
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Quantum dots.
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Quantum physics (quantum mechanics quantum field theory)
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Semiconductors-- Materials.
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TECHNOLOGY ENGINEERING-- Mechanical.
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| Dewey Classification
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621.3815/2
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| LC Classification
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TK7871.85
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