qib.lattice.odd_face_centered_lattice.OddFaceCenteredLattice¶

class qib.lattice.odd_face_centered_lattice.OddFaceCenteredLattice(shape: Sequence[int], pbc=False)[source]¶

Modified square lattice in two dimensions, where every “odd” face has an additional vertex at the center. Used for “compact encoding”.

Methods

`adjacency_matrix`	Construct the adjacency matrix, indicating nearest neighbors.
`coord_to_index`	Map lattice coordinate to linear index.
`edge_to_odd_face_index`	Find the adjacent "odd" face of edge (i, j), returning the lattice site index of the face, or -1 in case the edge is not adjacent to an odd face.
`index_to_coord`	Map linear index to lattice coordinate.

Attributes

`ndim`	Number of spatial dimensions.
`nsites`	Number of lattice sites.

adjacency_matrix()[source]¶: Construct the adjacency matrix, indicating nearest neighbors. Each site at an odd face center is considered to be a neighbor of the four corners of the face.

edge_to_odd_face_index(i, j)[source]¶: Find the adjacent “odd” face of edge (i, j), returning the lattice site index of the face, or -1 in case the edge is not adjacent to an odd face.

index_to_coord(i: int) → tuple[source]¶: Map linear index to lattice coordinate.