def _get_xmon_optimizers_part_cz(
tolerance: float, tabulation: Optional[GateTabulation]
) -> List[Callable[['cirq.Circuit'], None]]:
if tabulation is not None:
# coverage: ignore
raise ValueError("Gate tabulation not supported for xmon")
return [
convert_to_xmon_gates.ConvertToXmonGates().optimize_circuit,
optimizers.MergeInteractions(tolerance=tolerance,
allow_partial_czs=True).optimize_circuit,
lambda c: optimizers.merge_single_qubit_gates_into_phxz(c, tolerance),
*_get_common_cleanup_optimizers(tolerance=tolerance),
]
def optimized_circuit(circuit: circuits.Circuit,
atol: float = 1e-8,
repeat: int = 10,
merge_interactions: bool = True) -> circuits.Circuit:
circuit = circuits.Circuit(circuit) # Make a copy
for _ in range(repeat):
start_len = len(circuit)
start_cz_count = _cz_count(circuit)
if merge_interactions:
optimizers.MergeInteractions(
allow_partial_czs=False,
post_clean_up=_optimized_ops,
).optimize_circuit(circuit)
circuit2 = pauli_string_optimized_circuit(circuit,
move_cliffords=False,
atol=atol)
circuit3 = clifford_optimized_circuit(circuit2, atol=atol)
if len(circuit3) == start_len and _cz_count(
circuit3) == start_cz_count:
return circuit3
circuit = circuit3
return circuit
"""A combination of several optimizations targeting XmonDevice."""
from typing import Optional, Callable, cast
from cirq import circuits, devices, ops, optimizers
from cirq.google import (
convert_to_xmon_gates,
merge_rotations,
xmon_device)
_TOLERANCE = 1e-5
_OPTIMIZERS = [
convert_to_xmon_gates.ConvertToXmonGates(),
optimizers.MergeInteractions(tolerance=_TOLERANCE,
allow_partial_czs=False),
convert_to_xmon_gates.ConvertToXmonGates(),
merge_rotations.MergeRotations(tolerance=_TOLERANCE),
optimizers.EjectPhasedPaulis(tolerance=_TOLERANCE),
optimizers.EjectZ(tolerance=_TOLERANCE),
optimizers.DropNegligible(tolerance=_TOLERANCE),
merge_rotations.MergeRotations(tolerance=_TOLERANCE),
]
_OPTIMIZERS_PART_CZ = [
convert_to_xmon_gates.ConvertToXmonGates(),
optimizers.MergeInteractions(tolerance=_TOLERANCE,
allow_partial_czs=True),
convert_to_xmon_gates.ConvertToXmonGates(),
merge_rotations.MergeRotations(tolerance=_TOLERANCE),
