scqubits.core.diag.evals_cupy_sparse#
- scqubits.core.diag.evals_cupy_sparse(matrix, evals_count, **kwargs)[source]#
Diagonalization based on cupy’s (sparse) eigsh function. Only evals are returned.
Requires that the cupy (and cupyx) library is installed.
- Parameters:
matrix (
Union
[ndarray
,csc_matrix
,Qobj
]) – ndarray or qutip.Qobj to be diagonalizedevals_count (
int
) – how many eigenvalues/vectors should be returnedkwargs – optional settings that are passed onto the diagonalization routine
- Return type:
ndarray
- Returns:
eigenvalues of matrix