Quantum Katas: Self-Paced Quantum Programming Exercises (Microsoft)
Microsoft Quantum
quantum fourier transform
4 courses · 4 tutorials
Courses
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Cirq Tutorials and Documentation (Google Quantum AI)
Google Quantum AI
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QSilver: Intermediate Quantum Computing Workshop (QWorld)
QWorld volunteer instructors
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Applied Quantum Computing III: Algorithm and Software (Purdue)
Purdue University
Free Tutorials
- →
- intermediate
- 30 min
The Quantum Fourier Transform: How and Why It Works
A step-by-step explanation of the quantum Fourier transform: the circuit construction, why it is exponentially faster than the classical FFT, and its role in phase estimation and Shor's algorithm.
- →
- intermediate
- 20 min read
Shor's Algorithm Explained
How Shor's algorithm breaks RSA encryption by factoring large numbers exponentially faster than any classical computer, and what this means for cybersecurity.
- →
- intermediate
- 18 min read
Cirq QFT From Scratch: Controlled-Phase Rotations Step by Step
Build the Quantum Fourier Transform in Cirq one rotation at a time. Verifies against the classical DFT, explains the bit reversal, and shows where the speedup actually comes from.
- →
- intermediate
- 13 min read
Quantum Fourier Transform in Qiskit
Build the quantum Fourier transform circuit from scratch in Qiskit, understand why it works, and see how it underpins Shor's algorithm and quantum phase estimation.