Glossary

X-Gate

The X-Gate flips a qubit's probability amplitudes between its two basis states, effectively exchanging their roles. It doesn’t just turn into , but rotates any quantum state halfway around the x-axis of the Bloch sphere. This means it inverts the qubit's orientation while preserving the overall shape of its state on the sphere.

by Frank Zickert

Figure 1 The Pauli-X operator