MachineModel

class MachineModel(num_qudits, coupling_graph=None, gate_set=None, radixes=[])[source]

Bases: object

A model of a quantum processing unit.

__init__(num_qudits, coupling_graph=None, gate_set=None, radixes=[])[source]

MachineModel Constructor.

Parameters:

  • num_qudits (int) – The total number of qudits in the machine.

  • coupling_graph (Iterable[tuple[int, int]] | None) – A coupling graph describing which pairs of qudits can interact. Given as an undirected edge set. If left as None, then an all-to-all coupling graph is used as a default. (Default: None)

  • gate_set (GateSetLike | None) – The native gate set available on the machine. If left as None, the default gate set will be used. See default_gate_set().

  • radixes (Sequence[int]) – A sequence with its length equal to num_qudits. Each element specifies the base of a qudit. Defaults to qubits.

Raises:

ValueError – If num_qudits is nonpositive.

Note

Pre-built models for many active QPUs exist in the ext package.

Methods

get_locations(block_size)

Return all block_size connected blocks of qudit indicies.

is_compatible(circuit[, placement])

Check if a circuit is compatible with this model.