qiskit.circuit.library.NLocal.get_entangler_map

NLocal.get_entangler_map(rep_num, block_num, num_block_qubits)

Get the entangler map for in the repetition rep_num and the block block_num.

The entangler map for the current block is derived from the value of self.entanglement. Below the different cases are listed, where i and j denote the repetition number and the block number, respectively, and n the number of qubits in the block.

entanglement type	entangler map
None	[[0, ..., n - 1]]
str (e.g 'full')	the specified connectivity on n qubits
List[int]	[entanglement]
List[List[int]]	entanglement
List[List[List[int]]]	entanglement[i]
List[List[List[List[int]]]]	entanglement[i][j]
List[str]	the connectivity specified in entanglement[i]
List[List[str]]	the connectivity specified in entanglement[i][j]
Callable[int, str]	same as List[str]
Callable[int, List[List[int]]]	same as List[List[List[int]]]

Note that all indices are to be taken modulo the length of the array they act on, i.e. no out-of-bounds index error will be raised but we re-iterate from the beginning of the list.

Parámetros

• rep_num (int) – The current repetition we are in.

• block_num (int) – The block number within the entanglement layers.

• num_block_qubits (int) – The number of qubits in the block.

Devuelve

The entangler map for the current block in the current repetition.

Muestra

ValueError – If the value of entanglement could not be cast to a corresponding entangler map.

Tipo del valor devuelto

Sequence[Sequence[int]]