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qiskit.circuit.library.NLocal.get_entangler_map

NLocal.get_entangler_map(rep_num, block_num, num_block_qubits)[fuente]

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.

Tipo del valor devuelto

List[List[int]]

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.