Calculul cuantic. Capitol din lucrarea „Introducere în tehnologiile cuantice”, Nicolae Sfetcu, MultiMedia Publishing, 2026

Abstract

A synthesis and introductory work that articulates, in a unified framework, three major directions of “quantum technologies”: (i) quantum computing, (ii) quantum cryptography/communications, and (iii) philosophical reflection on the epistemic, ethical, and politico-institutional implications of the “second quantum revolution.” The volume is accompanied by complete bibliographic data. The book aims to provide an accessible yet rigorous introduction, intended especially for readers with a background in science and computer science, interested in the impact of quantum phenomena on information processing and security. At the heart of the approach is the idea that technological advantages (and risks) stem from fundamental properties such as superposition, inseparability, interference, uncertainty, and non-cloning, discussed as operational “resources” for computation, communication, and security. The structure is layered: it begins with an orientation section (“Quantum Technologies for Informatics and Security”), then goes deeper through two didactic-technical blocks (quantum computing; quantum cryptography) and ends with a philosophical module dedicated to conceptual and normative implications. The table of contents indicates a progression from the fundamentals (QIS and relevant quantum mechanics notions) to applications, limitations and governance (EU and Romania), followed by resources/bibliography. A distinctive element of the volume is the connection of the technical discussion to policies and strategies: both the EU Strategy “Quantum Europe Strategy: Quantum Europe in a Changing World” (European Commission, 2 July 2025), with an emphasis on the transition “from laboratory to factory and use”, and the National Strategy of Romania (2024–2029), oriented towards resources, industry and international positioning, including infrastructure, skills and security “by design”, are presented. By combining (a) a didactic path with exercises and solutions, (b) an applied synthesis for computer science and security, (c) a reference framework/bibliography, and (d) a philosophical-ethical reflection section, the book functions as an introductory manual, interdisciplinary orientation guide, and starting point for discussions on the governance of quantum technologies. In an academic presentation, the volume can be framed as an “interface” work between technical curricula (algorithms, protocols, hardware) and social responsibility issues (risks, dual use, education, and “ethical railings”)