Quellcode für qiskit.transpiler.passes.calibration.pulse_gate

# This code is part of Qiskit.
# (C) Copyright IBM 2022.
# This code is licensed under the Apache License, Version 2.0. You may
# obtain a copy of this license in the LICENSE.txt file in the root directory
# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
# Any modifications or derivative works of this code must retain this
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"""Instruction scheduel map reference pass."""

from typing import List, Union

from qiskit.circuit import Instruction as CircuitInst
from qiskit.pulse import Schedule, ScheduleBlock
from qiskit.pulse.instruction_schedule_map import InstructionScheduleMap
from qiskit.transpiler.target import Target
from qiskit.transpiler.exceptions import TranspilerError

from .base_builder import CalibrationBuilder

[Doku]class PulseGates(CalibrationBuilder): """Pulse gate adding pass. This pass adds gate calibrations from the supplied ``InstructionScheduleMap`` to a quantum circuit. This pass checks each DAG circuit node and acquires a corresponding schedule from the instruction schedule map object that may be provided by the target backend. Because this map is a mutable object, the end-user can provide a configured backend to execute the circuit with customized gate implementations. This mapping object returns a schedule with "publisher" metadata which is an integer Enum value representing who created the gate schedule. If the gate schedule is provided by end-users, this pass attaches the schedule to the DAG circuit as a calibration. This pass allows users to easily override quantum circuit with custom gate definitions without directly dealing with those schedules. References * [1] OpenQASM 3: A broader and deeper quantum assembly language https://arxiv.org/abs/2104.14722 """ def __init__( self, inst_map: InstructionScheduleMap = None, target: Target = None, ): """Create new pass. Args: inst_map: Instruction schedule map that user may override. target: The :class:`~.Target` representing the target backend, if both ``inst_map`` and this are specified then it updates instructions in the ``target`` with ``inst_map``. """ super().__init__() if inst_map is None and target is None: raise TranspilerError("inst_map and target cannot be None simulataneously.") if target is None: target = Target() target.update_from_instruction_schedule_map(inst_map) self.target = target
[Doku] def supported(self, node_op: CircuitInst, qubits: List) -> bool: """Determine if a given node supports the calibration. Args: node_op: Target instruction object. qubits: Integer qubit indices to check. Returns: Return ``True`` is calibration can be provided. """ return self.target.has_calibration(node_op.name, tuple(qubits))
[Doku] def get_calibration(self, node_op: CircuitInst, qubits: List) -> Union[Schedule, ScheduleBlock]: """Gets the calibrated schedule for the given instruction and qubits. Args: node_op: Target instruction object. qubits: Integer qubit indices to check. Returns: Return Schedule of target gate instruction. Raises: TranspilerError: When node is parameterized and calibration is raw schedule object. """ return self.target.get_calibration(node_op.name, tuple(qubits), *node_op.params)