iqm.qiskit_iqm.iqm_backend.IQMBackendBase

class iqm.qiskit_iqm.iqm_backend.IQMBackendBase(architecture: QuantumArchitectureSpecification | DynamicQuantumArchitecture, **kwargs)

Bases: BackendV2, ABC

Abstract base class for various IQM-specific backends.

Parameters:

architecture (Union[QuantumArchitectureSpecification, DynamicQuantumArchitecture]) – Description of the quantum architecture associated with the backend instance.

Attributes

physical_qubits	Return the list of physical qubits in the backend.
target	A qiskit.transpiler.Target object for the backend.
target_with_resonators	Return the target with MOVE gates and resonators included.
architecture	Dynamic quantum architecture of the backend instance.
name	Name of the backend.
description	Optional human-readable description.
online_date	Date that the backend came online.
backend_version	Version of the backend being provided.

Methods

get_real_target()	Return the real physical target of the backend without virtual CZ gates.
get_scheduling_stage_plugin()	Return the plugin that should be used for scheduling the circuits on this backend.
has_resonators()	True iff the backend QPU has computational resonators.
index_to_qubit_name(index)	Given a quantum register index, return the corresponding IQM-style qubit name.
qubit_name_to_index(name)	Given an IQM-style qubit name, return the corresponding index in the register.
restrict_to_qubits(qubits[, ...])	Generated a restricted transpilation target from this backend that only contains the given qubits.

architecture: DynamicQuantumArchitecture

Dynamic quantum architecture of the backend instance.

property target: Target

A qiskit.transpiler.Target object for the backend.

Return type:

Target

property target_with_resonators: Target

Return the target with MOVE gates and resonators included.

property physical_qubits: list[str]

Return the list of physical qubits in the backend.

has_resonators() → bool

True iff the backend QPU has computational resonators.

Return type:

bool

get_real_target() → Target

Return the real physical target of the backend without virtual CZ gates.

Return type:

Target

qubit_name_to_index(name: str) → int

Given an IQM-style qubit name, return the corresponding index in the register.

Parameters:

name (str) – IQM-style qubit name (‘QB1’, ‘QB2’, etc.)

Returns:

Index of the given qubit in the quantum register.

Raises:

ValueError – Qubit name cannot be found on the backend.

Return type:

int

index_to_qubit_name(index: int) → str

Given a quantum register index, return the corresponding IQM-style qubit name.

Parameters:

index (int) – Qubit index in the quantum register.

Returns:

Corresponding IQM-style qubit name (‘QB1’, ‘QB2’, etc.).

Raises:

ValueError – Qubit index cannot be found on the backend.

Return type:

str

get_scheduling_stage_plugin() → str

Return the plugin that should be used for scheduling the circuits on this backend.

Return type:

str

restrict_to_qubits(qubits: list[int] | list[str], include_resonators: bool = False, include_fake_czs: bool = True) → IQMTarget

Generated a restricted transpilation target from this backend that only contains the given qubits.

Parameters:

• qubits (list[int] | list[str]) – Qubits to restrict the target to. Can be either a list of qubit indices or qubit names.

• include_resonators (bool) – Whether to restrict self.target or self.target_with_resonators.

• include_fake_czs (bool) – Whether to include virtual CZs that are unsupported, but could be routed via MOVE.

Returns:

restricted target

Return type:

IQMTarget