Technology and Systems - Quantum Computing and the Future of Computers: The Next Era of Computing

How will computers keep advancing when making smaller chips is no longer enough? Quantum computing offers one possible path-but the future of processing also involves artificial intelligence, photonic computing, and new semiconductor architectures. Quantum Computing and the Future of Computers explores the foundations of classical computing and the physical, energy, and economic constraints reshaping the industry. Transistors, Moore's Law, GPUs, and specialized accelerators provide the groundwork for understanding why the next era of computing requires more than faster processors. The book explains qubits, superposition, entanglement, and quantum algorithms while examining the challenges of error correction and fault-tolerant quantum computers. It investigates potential applications in drug discovery, materials research, optimization, and machine learning, alongside the implications for digital security and the importance of post-quantum cryptography. Beyond quantum computing, the discussion covers neuromorphic chips, processing with light, reversible computing, chiplets, and three-dimensional stacking. Manufacturing costs, industrial concentration, and competition for technological sovereignty reveal how these developments affect businesses, governments, and digital infrastructure. Written for students, professionals, and readers interested in technology, this book offers a broad understanding of emerging computing systems and their practical limitations. It examines which problems different architectures can address, where significant obstacles remain, and why the future of computers will depend on integrating multiple technologies.