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Quantum Computing: From Qubits to Fault Tolerance
Paperback
General ComputersPhysicsComputer Security
Publisher: Independently Published
Published: Oct 4 2026
Pages: 196
Weight: 0.77
Height: 0.42 Width: 7.00 Depth: 10.00
Language: English
Quantum computing has stopped being a theory. It is now an engineering race, a security deadline and a career skill. This book explains it clearly, from first principles to the latest breakthroughs.
Between 2024 and 2026 the field changed more than in the decade before. Error correction crossed the threshold at which adding more qubits reduces errors instead of increasing them. Quantum processors produced verifiable results beyond the reach of classical supercomputers. NIST published the first post-quantum cryptography standards, and governments set firm dates to retire the encryption that protects the internet. Most textbooks were written before any of this happened.
Quantum Computing: From Qubits to Fault Tolerance takes you from the first qubit to the frontier of the field. It assumes basic programming and introductory linear algebra, and no prior physics.
Inside you will learn:
- The foundations: complex vector spaces, Dirac notation, the postulates of quantum mechanics, the Bloch sphere, density matrices and entanglement, all built from scratch
- The circuit model: gates, universality, reversible computation, and what quantum computers can and cannot do efficiently
- The landmark algorithms: Deutsch-Jozsa, Bernstein-Vazirani, Simon, the quantum Fourier transform, phase estimation, Shor's factoring algorithm and Grover search, each worked through step by step
- Near-term methods: Hamiltonian simulation, VQE, QAOA and hybrid quantum-classical computing, with an honest look at quantum machine learning
- How real machines are built: noise and benchmarking, quantum error correction and the surface code, and a comparison of superconducting, trapped-ion, neutral-atom, photonic, spin and topological hardware
- The software stack: compilers, OpenQASM 3, Qiskit, Cirq, CUDA-Q and cloud execution
- Quantum-safe security: the harvest now, decrypt later threat, the NIST post-quantum standards (ML-KEM, ML-DSA, SLH-DSA), migration planning and quantum key distribution
- The road ahead: quantum advantage claims, industry roadmaps, national strategies and the open problems that will shape the next decade
Built for learning:
- Learning outcomes, summaries and graded exercises in every chapter
- 22 hands-on Qiskit labs, each tested and runnable on your own computer
- Key Idea and Myth vs. Reality boxes that cut through the hype
- Over 25 original diagrams, plus a glossary, a timeline from 1980 to 2026, a linear algebra refresher and solutions to selected exercises
Ideal for undergraduate and postgraduate students in computer science, engineering and mathematics, for instructors looking for a one-semester course text, and for software engineers, security professionals and technology leaders who need to understand what quantum computing means for their work.
Quantum computing is hard, but it doesn't have to be confusing. This book gives you the concepts, the mathematics and the code to understand the field and take part in it.
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