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This book constitutes the proceedings of the First International Conference on Quantum Communication and Quantum Networking, QuantumCom 2009, held in Naples, Italy, in October 2009. The 38 full papers were selected from numerous submissions. This conference has been devoted to the discussion of new challenges in quantum communication and quantum networking that extends from the nanoscale devices to global satellite communication networks. It placed particular emphasis on basic quantum science effects and on emerging technological solutions leading to practical applications in the communication industry, culminating with a special section on Hybrid Information Processing.
Imagine theres no heaven Its easy if you try No hell below us Above us only sky Imagine all the people Living for today... -From Imagine, by John Lennon By the year 2258, religions, or life reward systems (LRS), were totally discredited. All of the myths, miracles, and magic had been disproved. The worlds population, with a few exceptions, believed that it was nonsense to say In God we trust or God bless America in what was left of the United States. Even the immense power blocks of China and India, the leading world powers, had given up deities. This is not a normal book foreword; it is a fast forward. We need to fast forward about three hundred years into the future and not look at the past, which of course would be a fast rewind. The signs leading to the assumptions made by this book, when it deals with the future, are everywhere to be seen today. However, the situation is that most people wont or cant see too far beyond the end of their nose. They incorrectly assume that everyone believes what they believe and not too often question the path they take, as most people desire the path of least resistance.
What limits, if any, should be placed on a government's efforts to spy on its citizens in the interests of national security? Spying on foreigners has long been regarded as an unseemly but necessary enterprise. Spying on one's own citizens in a democracy, by contrast, has historically been subject to various forms of legal and political restraint. For most of the twentieth century these regimes were kept distinct. That position is no longer tenable. Modern threats do not respect national borders. Changes in technology make it impractical to distinguish between 'foreign' and 'local' communications. And our culture is progressively reducing the sphere of activity that citizens can reasonably e...
This proceedings volume presents the very latest developments in non-astronomical adaptive optics. This international workshop, the sixth in a biennial series, was the largest ever held and boasted significant involvement by industry. Adaptive optics is on the verge of being used in many products; indeed, at this meeting, the use of adaptive optics in DVD players was disclosed for the first time.
This book constitutes the thoroughly refereed post-conference proceedings of the Second International ICST Conference on Personal Satellite Services, PSATS 2010, held in Rome, Italy, Februray 2010. The conference included a keynote speech, 4 regular technical tracks and 4 special sessions consisting of 33 high-quality scientific papers. These cover various topics such as Satellite Communications: Coding and Modulations, Multimedia Integration, Satellite Network: Quality of Service and Architectures and Applications and Services, as well as Delay-Tolerant Networks, Quantum Satellite Communications, Access Quality Processing and Applications of Satellite Imagery.
Written by a renowned quantum physicist closely involved in the U.S. government's development of quantum information science, this book presents an inside look at the government's quest to build a quantum computer capable of solving complex mathematical problems and hacking the public-key encryption codes used to secure the Internet. The "killer app" refers to Shor's quantum factoring algorithm, which would unveil the encrypted communications of the entire Internet if a quantum computer could be built to run the algorithm. Schrodinger's notion of quantum entanglement-and his infamous cat-is at the heart of it all.
In this thesis we study device-independent quantum key distribution based on energy-time entanglement. This is a method for cryptography that promises not only perfect secrecy, but also to be a practical method for quantum key distribution thanks to the reduced complexity when compared to other quantum key distribution protocols. However, there still exist a number of loopholes that must be understood and eliminated in order to rule out eavesdroppers. We study several relevant loopholes and show how they can be used to break the security of energy-time entangled systems. Attack strategies are reviewed as well as their countermeasures, and we show how full security can be re-established. Quan...
Invention of the solid-state laser has initiated the beginning of the laser era. Performance of solid-state lasers improved amazingly during five decades. Nowadays, solid-state lasers remain one of the most rapidly developing branches of laser science and become an increasingly important tool for modern technology. This book represents a selection of chapters exhibiting various investigation directions in the field of solid-state lasers and the cutting edge of related applications. The materials are contributed by leading researchers and each chapter represents a comprehensive study reflecting advances in modern laser physics. Considered topics are intended to meet the needs of both specialists in laser system design and those who use laser techniques in fundamental science and applied research. This book is the result of efforts of experts from different countries. I would like to acknowledge the authors for their contribution to the book. I also wish to acknowledge Vedran Kordic for indispensable technical assistance in the book preparation and publishing.
Comprehensive and authoritative resource paving the way for the integration of machine-type communications (MTC) and satellite connectivity toward 6G era This book focuses on the integration of machine-type communications (MTC) and satellite connectivity toward the 6th generation of mobile systems (i.e., the “6G”). Integrating these two technologies, especially within the emerging direct-to-satellite (DtS) concept employing direct connectivity between an MTC terminal and a satellite-based gateway, will be critical in enabling the future Internet of Things (IoT) applications in remote areas with limited connectivity infrastructure available. To this end, the book delivers an in-depth anal...