spheres.coordinates.c_spinor

spheres.coordinates.c_spinor(c)

Converts extended complex coordinate to a spinor.

If \(c = \infty\), returns \(\begin{pmatrix} 0 \\ 1 \end{pmatrix}\).

Otherwise, returns \(\frac{1}{\sqrt{1+|c|^2}} \begin{pmatrix} 1 \\ c \end{pmatrix}\)

Parameters

c (complex/inf or list/np.ndarray) – Extended complex coordinate(s).

Returns

spinor – (List of) normalized spinor(s).

Return type

list or qt.Qobj