removed null space vectors from svd to make dimensions match

Author: juangmendoza19

pygsti/modelmembers/povms/__init__.py

@@ -577,7 +577,7 @@ def calc_physical_subspace(dense_ideal_povm, epsilon = 1e-4):
 
                         J[:,i] = vectorized_povm
 
-                    _,S,Vt = _np.linalg.svd(J)
+                    _,S,Vt = _np.linalg.svd(J, full_matrices=False)
 
                     #Only return nontrivial singular vectors
                     Vt = Vt[S > 1e-13, :].reshape((-1, Vt.shape[1]))

pygsti/modelmembers/states/__init__.py

@@ -286,7 +286,7 @@ def calc_physical_subspace(ideal_prep, epsilon = 1e-4):
                             exp_errgen.from_vector(new_vec)
                             J[:,i] = (exp_errgen.to_dense() @ ideal_prep - ideal_prep)[1:]/epsilon
 
-                        _,S,Vt = _np.linalg.svd(J)
+                        _,S,Vt = _np.linalg.svd(J, full_matrices=False)
 
                         #Only return nontrivial singular vectors
                         Vt = Vt[S > 1e-13, :].reshape((-1, Vt.shape[1]))