QFT
0 courses · 4 tutorials
Free Tutorials
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- 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.
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- 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.
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- intermediate
- 15 min read
Quantum Phase Estimation in Qiskit
How quantum phase estimation works and how to implement it in Qiskit: circuit construction, ancilla register sizing, and reading the phase from measurement results.
- →
- intermediate
- 18 min read
Quantum Fourier Transform in Cirq
Build the Quantum Fourier Transform from scratch in Cirq using controlled phase rotations and verify it against the classical DFT matrix.