Advancements in Superconducting Microwave Cavities and Qubits for Quantum Information Systems

Superconducting microwave cavities with ultra-high Q-factors are revolutionizing the field of quantum computing, offering long coherence times exceeding 1 ms, which is critical for realizing scalable multi-qubit quantum systems with low error rates. In this work, we provide an in-depth analysis of recent advances in ultra-high Q-factor cavities, integration of Josephson junction-based qubits, and bosonic-encoded qubits in 3D cavities. We examine the sources of quantum state dephasing caused by damping and noise mechanisms in cavities and qubits, highlighting the critical challenges that need to be addressed to achieve even higher coherence times. We critically survey the latest progress made in implementing single 3D qubits using superconducting materials, normal metals, and multi-qubit and multi-state quantum systems. Our work sheds light on the promising future of this research area, including novel materials for cavities and qubits, modes with nontrivial topological properties, error correction techniques for bosonic qubits, and new light-matter interaction effects

Vocational Teacher Education in Central Asia: Developing Skills and Facilitating Success

teacher training; project based learning; educational technology; research methodology; network development; vocational teacher education; developing teaching skills; technical teacher education; Central Asia; GIZ Programme Professional Education in Central Asia; PBL; TVET; USPECH; Kazakhstan; Kyrgyzstan; Tajikistan; vocational educatio

Vocational Teacher Education in Central Asia: Developing Skills and Facilitating Success

This open access volume presents papers on vocational education, project-based learning and science didactic approaches, illustrating with sample cases, and with a special focus on Central Asian states. Thematically embedded in the area of Technical Vocational Education and Training (TVET), the book examines the following main topics: project-based learning (PBL), specific didactics with a linkage to food technologies and laboratory didactics, media and new technologies in TVET, evaluation of competencies including aspects of measurement, examination issues, and labour market and private sector issues in TVET, and research methods with a focus on empirical research and the role of scientific networks. It presents outcomes from TVET programmes at various universities, colleges, and teacher training institutes in Central Asia

Social indicators for use with multi-regional input-output analysis

Accounting for social impacts in supply chain analysis is of increasing importance. Global trade has increased significantly since 1970, as has inequality. As global supply chains have become more prevalent, the need to understand and analyse these supply chains has also grown. Excellent work on quantitative analysis of environmental impacts in supply chains has taken place in the past two decades. However, relatively few methodologies have been applied to quantitative analysis of social impacts in supply chains. This thesis considers how social indicators for supply chain analysis can be developed through the use of socially extended multi-regional input-output analysis. Chapter 1 provides an introduction and context. Chapter 2 considers the history of social accounting. Chapter 3 looks at quantitative accounting for social-economic indicators and the development of national accounts, particularly in reference to standardised collection of data for social-economic indicators and socially-extended input- output analysis. Chapter 4 presents a case study of coltan mining and methodological analysis using deaths in the Democratic Republic of Congo as a social indicator for the electronics supply chain. Chapter 5 analyses the results of the same case study and considers how enumerating social impacts in upstream supply chains can influence environmental and social justice actions in downstream supply chains. Chapter 6 provides a review of input-output analysis used as a tool for analysing consumption since 2010. Chapter 7 proposes the use of a suite of quantitative social indicators for analysis in the form of a social footprint. Chapter 8 provides a conclusion. This thesis tracks the author’s interest in understanding social impacts in global supply chains and proposes a social footprint for supply chain analysis using the multi-regional input output methodology

Vocational Teacher Education in Central Asia: Developing Skills and Facilitating Success

teacher training; project based learning; educational technology; research methodology; network development; vocational teacher education; developing teaching skills; technical teacher education; Central Asia; GIZ Programme Professional Education in Central Asia; PBL; TVET; USPECH; Kazakhstan; Kyrgyzstan; Tajikistan; vocational educatio

The Neot Semadar Narrative

This narrative is a compilation of personal journeys written to illustrate the individual experiences at the Israeli desert community of Neot Semadar and the transformative adventure of participating in a new way of life as it relates to the overall experience of international travel and project work. Each section follows the life of one of the students, their journeys, and personal conclusions about their experience as it relates to international projects abroad, interacting with new cultures, and life at the project site. The narrative concludes with an overall analysis of the project, as well as an appended deliverable to the sponsor on how to assemble temperature and current sensors in homes-- one of the main projects the IQP group spent working on while in Israel

Advances in Computer Science and Engineering

The book Advances in Computer Science and Engineering constitutes the revised selection of 23 chapters written by scientists and researchers from all over the world. The chapters cover topics in the scientific fields of Applied Computing Techniques, Innovations in Mechanical Engineering, Electrical Engineering and Applications and Advances in Applied Modeling

Exploring valleytronics in 2D transition metal dichalcogenides

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.Cataloged from PDF version of thesis.Includes bibliographical references (pages 129-144).Monolayer transition metal dichalcogenides (TMDs) exhibit distinct electrical and optical properties according to the relative occupation of each of two valleys in their dispersion relation. The resulting valley degree of freedom is robust, linked to a large spin-orbit splitting between valence bands, and shows promise in electro-optical devices or as an information token for logic applications. In order to explore applications of these properties, monolayer crystals are required that have reduced intervalley scattering. To date, the majority of valley-related studies have focused on exfoliated samples for their quality and ease of production. In this thesis, valley polarization is explored in monolayer tungsten disulfide (WS₂) synthesized by chemical vapor transport (CVT). This novel method of bottom-up growth relies on halide-driven vapor transport commonly utilized in bulk crystal growth. Using a small amount of sodium chloride salt as a source of chlorine, non-volatile WS₂ can react to form gaseous tungsten chloride and sulfur. With an open tube system, a controlled reaction generates mono- and few- layer WS₂ crystals. These crystals have excellent optical properties and exhibit a degree of valley polarization near 50% at 77 K and up to 30% at room temperature. This surpasses previous values reported in WS₂ . By decoupling pump photon and thermal energy, valley depolarization shows the characteristics of an electron-hole exchange interaction rather than nonradiative scattering. These results offer the initial groundwork for future devices that use the coupled valley-spin degree of freedom as a robust token of information, promising reduced power consumption compared to conventional MOSFET-based electronics.by Brian Joseph Modtland.Ph. D

Measurements, Models, Systems and Design

531 s.

Foundations of Multi-Paradigm Modelling for Cyber-Physical Systems

This open access book coherently gathers well-founded information on the fundamentals of and formalisms for modelling cyber-physical systems (CPS). Highlighting the cross-disciplinary nature of CPS modelling, it also serves as a bridge for anyone entering CPS from related areas of computer science or engineering. Truly complex, engineered systems—known as cyber-physical systems—that integrate physical, software, and network aspects are now on the rise. However, there is no unifying theory nor systematic design methods, techniques or tools for these systems. Individual (mechanical, electrical, network or software) engineering disciplines only offer partial solutions. A technique known as Multi-Paradigm Modelling has recently emerged suggesting to model every part and aspect of a system explicitly, at the most appropriate level(s) of abstraction, using the most appropriate modelling formalism(s), and then weaving the results together to form a representation of the system. If properly applied, it enables, among other global aspects, performance analysis, exhaustive simulation, and verification. This book is the first systematic attempt to bring together these formalisms for anyone starting in the field of CPS who seeks solid modelling foundations and a comprehensive introduction to the distinct existing techniques that are multi-paradigmatic. Though chiefly intended for master and post-graduate level students in computer science and engineering, it can also be used as a reference text for practitioners