Quantum Mastery
A free, 87-chapter book on quantum computing — from the physics of a single qubit to the judgment to tell a real application from a press release.
The book — ten parts, eighty-seven chapters
New here? Start with the orientation guides
I. Mental Model ch. 1–7Computation as a physical process — qubits, measurement, interference, and entanglement with the myths removed.
II. Mathematical Core ch. 8–15Just enough linear algebra, in the order quantum computing actually uses it.
III. Circuit Model ch. 16–22Gates, controlled operations, Bell states, no-cloning, and what a circuit costs.
IV. Protocols and Algorithms ch. 23–35Teleportation, QKD, Grover, the QFT, phase estimation, Shor — mechanism first, mythology last.
V. Practical Software ch. 36–44Build a simulator, run real SDKs, transpile for real devices, benchmark claims yourself.
VI. Reliability and Fault Tolerance ch. 45–53Decoherence, error correction, surface codes, and what a logical qubit actually costs.
VII. Hardware Architecture ch. 54–63Superconducting, ions, neutral atoms, photonics, silicon spin, bosonic — compared honestly.
VIII. Applications and Strategy ch. 64–72Chemistry, materials, optimization, security, machine learning, sensing — each against its classical baseline.
IX. Company and Investing ch. 73–82Diligence frameworks: moats, proof gates, timing, and how to read a roadmap.
X. Capstones ch. 83–87Five public artifacts that prove the understanding survived contact with reality.
Every chapter opens with its core concepts and ends with an exercise and a mastery check. Parts I–VII teach fundamentals that do not expire; Parts VIII–X apply them to applications, companies, and capstone work, and date any claim that can decay.