Editing Pauli matrices (section)

=== Quantum information ===
In [[quantum information]], single-[[qubit]] [[quantum gate]]s are 2 × 2 [[unitary matrices]]. The Pauli matrices are some of the most important single-qubit operations. In that context, the Cartan decomposition given above is called the "Z–Y decomposition of a single-qubit gate". Choosing a different Cartan pair gives a similar "X–Y ''decomposition of a single-qubit gate'' ".