circuits / qft-3-qubit

Quantum Fourier Transform (3 qubit)

✓FEATURED

The 3-qubit Quantum Fourier Transform (QFT), a key subroutine in Shor's algorithm and quantum phase estimation.

quantumcomputer.dev

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qft fourier-transform subroutinefourier-transform

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Source Code

OPENQASM 2.0;
include "qelib1.inc";
qreg q[3];
creg c[3];
h q[0];
cp(pi/2) q[1],q[0];
cp(pi/4) q[2],q[0];
h q[1];
cp(pi/2) q[2],q[1];
h q[2];
swap q[0],q[2];
measure q -> c;

Cite this circuit

MIT

quantumcomputer.dev. "Quantum Fourier Transform (3 qubit)". quantumcomputer.dev/circuits/qft-3-qubit. 2026.