dq.sigmax

sigmax(*, layout: Layout | None = None) -> QArray

Returns the Pauli \(\sigma_x\) operator.

It is defined by \(\sigma_x = \begin{pmatrix} 0 & 1 \\ 1 & 0 \end{pmatrix}\).

Parameters

• layout –

  Matrix layout (dq.dense, dq.dia or None).

Returns

(qarray of shape (2, 2)) Pauli \(\sigma_x\) operator.

Examples

>>> dq.sigmax()
QArray: shape=(2, 2), dims=(2,), dtype=complex64, layout=dia, ndiags=2
[[  ⋅    1.+0.j]
 [1.+0.j   ⋅   ]]