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This book offers an introduction to ten key topics in quantum information science and quantum coherent phenomena, aimed at graduate-student level. The chapters cover some of the most recent developments in this dynamic research field where theoretical and experimental physics, combined with computer science, provide a fascinating arena for groundbreaking new concepts in information processing. The book addresses both the theoretical and experimental aspects of the subject, and clearly demonstrates how progress in experimental techniques has stimulated a great deal of theoretical effort and vice versa. Experiments are shifting from simply preparing and measuring quantum states to controlling ...
This book examines and explains the Center-Left’s political decline since 2008, whilst analyzing the factors that account for its sagging electoral and popular support, losing voters both to the Far-Left, the Far-Right, and abstentions. Focusing on the era since the 2008 financial crisis in particular, while also charting the historical genealogy that led to the current impasse, the book examines how, when and why the collapse of Europe’s Center-Left occurred. Moving beyond existing and slightly dated accounts, the contributors explore why Social Democrats lack compelling answers to pressing current policy challenges. Faced with a decline in its core clientele, namely blue-collar workers...
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This thesis presents an experimental study of quantum memory based on cold atomic ensembles and discusses photonic entanglement. It mainly focuses on experimental research on storing orbital angular momentum, and introduces readers to methods for storing a single photon carried by an image or an entanglement of spatial modes. The thesis also discusses the storage of photonic entanglement using the Raman scheme as a step toward implementing high-bandwidth quantum memory. The storage of photonic entanglement is central to achieving long-distance quantum communication based on quantum repeaters and scalable linear optical quantum computation. Addressing this key issue, the findings presented in the thesis are very promising with regard to future high-speed and high-capacity quantum communications.
In order to achieve a transition from a transport system centred on the individual car to one centred on (electrified) rail a new focus in infrastructure planning is needed. The preparation of project proposals for the Federal Transport Infrastructure Plan 2030 on the sub-national level in Germany provides an opportunity to study decision-making processes in ministries and compare their respective results in this respect. Using document analysis, expert interviews, qualitative content analysis as well as QCA, this thesis in political science analyses how decision-making processes within bureaucracies impact the decision output in transport infrastructure planning. It contributes to the discussion on bureaucracy-politics interactions that is relevant beyond the German case. One result is that ministries tend to use complex decision-making processes for topics deemed salient as long as the available capacity permits it. Consequently, in order to conduct legitimacy-enhancing steps – such as public participation – a well-funded bureaucracy is indispensable.
This book provides a comprehensive analysis of the distribution of public money and its political and societal implications. Drawing on evidence from central and eastern Europe, it offers an innovative insight into public responses to various strategies of public spending. Given that public expenditures are funded mainly from tax revenues, it also assesses public attitudes to politically motivated allocations of funds. The book seeks to identify how people evaluate the material benefits of funding in light of the fairness - or lack thereof - of the distribution process, whether popular acceptance of variations in public spending depends on the framing of the beneficiaries, and the implications of money allocation for political trust in political institutions.
Why do some countries hold elections that meet global democratic standards, while other countries do not? Electoral Commissions and Democratization in Africa makes a novel contribution to this question. In a departure from the typical story about the “boring” administrative tasks that electoral commissions carry out and their impact on international observers' assessments of election quality, Kerr aruges that electoral commissions provide valuable information that helps politicians and citizens resolve uncertainties about electoral fraud and administrative irregularities. Whereas previous research focuses on the institutional design of electoral commissions, this book privileges their ac...
Ministers, Minders and Mandarins collects the leading academics in the field to rigorously assess the impact and consequences of political advisers in parliamentary democracies. The 10 contemporary and original case studies focus on issues of tension, trust and tradition, and are written in an accessible and engaging style.
Violent Extremism: A Nordic Outlook illuminates the global issue of violent extremism, with a particular focus on Sweden and the Nordic countries. This concise volume leverages empirical research to uncover the mechanisms and dynamics driving violent extremism, setting itself apart in a field often criticized for a lack of data-driven analysis. The contributors employ unique Nordic data to offer insights on violent extremism, examining its organization, the evolution of extremist groups, online presence, and societal impact. Aimed at fostering a deeper understanding of the complexities of violent extremism, the contributions draw on several social science perspectives to enhance prevention and intervention strategies. This approach not only enriches our grasp of extremist organizations and individual paths in to or out of extremism but informs effective counter measures. Essential reading for policymakers, researchers, and security professionals, this volume offers practical, empirical insights on tackling a pressing challenge in societies around the globe.