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It is commonly thought superluminal or faster-than-light physics phenomena should be excluded from mainstream physics and considered like an exotic subject to be confined at most to science fiction, since their existence should be in contrast with the predictions of curently accepted main physical theories. On the other hand several theoretical and experimental results, collected during the last decades, like those related, for examples, to hypothetical tachyons, astrophysical quasars, anomalous dispersion in material media, quantum tunneling of single photons or e.m. field and finally to quantum entanglement, gave founded evidences of the occurrence of superluminal processes. Unfortunately, the study of such phenomena has been often compromised by misleading analyses, scientific prejudices or misunderstandings, preventing a balanced and in-depth assessment, so discouraging the realization of further experimental and theoretical examinations. In this book the authors explored, by adopting an open mind but also rigorous approach, some of the most intriguing and fascinating aspects of the physics of superluminal phenomena by describing and discussing, from a radically new standpoint related to the picture of QED coherence in matter, a series of theoretical explorations probing the possibility that superluminal particles and fields actually exist. In particular they also considered the hypothesis according to which the higher performance capabilities of human brain, including consciousness, could be explained from the standpoint of quantum computation, invoking superluminal particles like the conjectured so-called tachyons. As shown in this monograph, superluminal fields and particles emerging from quantum vacuum coherent dynamics could be responsible for new types of physical process providing new and valuable insights into the fields of fundamental physics, condensed matter physics, astrophysics, cosmology and biophysics as well, probably indicating the need for an honest and deep revision of the currently accepted framework of theoretical and applied physics and of the historically well-established scientific knowledge.
Quantum Computing is an ever-increasing field of interest both from a conceptual and applied standpoint. Quantum Computing, belonging to the so called “Quantum Information Science”, is founded on the principles of Quantum Mechanics and Information Science. Quantum Mechanics has radically changed our vision and understanding of the physical reality and has had also an enormous technological and societal impact. On the other hand, the developing of Information Theory, including computer science and communications theory, made possible the information “revolution” which had a deep impact on our everyday life. Quantum Computing then relates to the possibility to represent, process and manipulate information by using the principles of quantum mechanics. Apart the theoretical importance of quantum computing to further understand the quantum mechanical behavior of physical systems and the physical foundation of information itself at the most elementary level, probably the most interesting feature of Quantum Computing is related to the possibility to design and realize an actual quantum computer which processes information in the form of quantum-bits or qubits. The great interest of scientific community in the realization of such devices mainly concerns the common believe they could be enormously faster than their classical counterparts so allowing their employment in all the applied fields where computational power is a key feature. Furthermore, the study of Quantum Computing, both at the physical and computational level, would be very important for a deeper understanding of the quantum behavior of a very wide range of physical systems including condensed matter, living systems, elementary particles, astrophysical structures and so on. Despite the general theoretical basis of quantum computing are sufficiently understood, the actual realization of a general – purpose and really usable quantum computer has posed great difficulties so far, mainly related to the issue of “quantum decoherence”, the computational speed and scalability many of which still remain substantially unsolved.
This volume doesn’t mean to represent a complete or a beginner guide to Quantum Computing but has the aim to present some of its most interesting and fascinating developments in different frontier areas related to both theoretical and applied aspects, such, for example, the possibility to realize a quantum superfast “hypercomputing” system using water molecules as physical substrate to process, storage and retrieve information; the connection between quantum computers and quantum gravity; the development of an “instantaneous quantum computer algorithm”; the realization of a universal quantum computer, of a brain-like quantum supercomputer and many others frontiers topics. The target audience of this book is then composed by scientists and researchers interested in the most advanced theoretical and applied developments of quantum computation and quantum information.
