scqubits.core.operators.number_sparse

scqubits.core.operators.number_sparse(dimension, prefactor=None)

Number operator matrix of size dimension x dimension in sparse matrix representation. An additional prefactor can be directly included in the generation of the matrix by supplying ‘prefactor’.

Parameters:

• dimension (int) – matrix size

• prefactor (Optional[Union`[:py:class:`float, complex]]) – prefactor multiplying the number operator matrix

Return type:

csc_matrix

Returns:

sparse number operator matrix, size dimension x dimension