density matrix: [[[[ 0.48051805 -0.0005949   0.00000482 -0.00058152 -0.00000012]
   [-0.0005949   0.48106567  0.00000231  0.00070569 -0.00001428]
   [ 0.00000482  0.00000231  0.22376447  0.00000211  0.00000001]
   [-0.00058152  0.00070569  0.00000211  0.48455262  0.00001417]
   [-0.00000012 -0.00001428  0.00000001  0.00001417  0.22394773]]]]
overlap matrix: [[[[ 0.8828321   0.         -0.          0.         -0.        ]
   [ 0.          0.8828321  -0.          0.          0.        ]
   [-0.         -0.          0.4809965  -0.          0.        ]
   [ 0.          0.         -0.          0.88283211 -0.        ]
   [-0.          0.          0.         -0.          0.48082538]]]]