Learn quantum computing from scratch

Free tutorials covering core concepts, linear algebra, programming with Qiskit, and landmark quantum algorithms.

What you will learn

• Basics — qubits, superposition, entanglement, and measurement
• Mathematics — vectors, Dirac notation, and unitary gates as matrices
• Programming — install Qiskit, build circuits, and visualize results
• Algorithms — Grover search and Shor factoring algorithm (overview)

Recommended learning path (about 2–4 hours)

1) Core concepts

1. What is a Qubit?
2. Superposition
3. Entanglement
4. Measurement

2) The math you actually need

1. Linear algebra
2. Eigenvectors and eigenvalues
3. Dirac notation
4. Tensor products and partial trace
5. Phase kickback

3) Hands-on with Qiskit

1. Install Qiskit
2. Your first circuit
3. Visualization

4) Landmark algorithms (high-level)

1. Grover search
2. Amplitude amplification
3. Quantum Fourier Transform (QFT)
4. Shor’s algorithm

Popular questions (quick answers)

• “Can entangled particles communicate faster than light?” → Entanglement
• “What is wave function collapse?” → Measurement
• “Why are qubits so fragile?” → Decoherence & error correction
• “How do we picture a qubit?” → Bloch sphere

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• Tutorial index
• Basics
• Mathematics
• Programming
• Algorithms