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⚛️Quantum computing fundamentals
What a qubit actually is mathematically, how entanglement and circuits compose, the hardware approaches and their trade-offs, why error correction is the central engineering problem, where algorithmic quantum speedup lives, and how cryptography adapts. Six lessons, math-load-bearing, with no predictions about timelines.
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Lessons in order
- 1ScienceSuperposition and the qubitStart
- 2ScienceEntanglement, gates, and the circuit modelStart
- 3ScienceHardware approaches: superconducting, ion, photonic, atomic, spinStart
- 4ScienceErrors, syndromes, and the surface codeStart
- 5ScienceAlgorithms where quantum beats classical (and where it doesn't)Start
- 6SciencePost-quantum cryptography: lattices, codes, and the migrationStart