Skip to content

recursive=False for cancel_inverse of tutorial_circuit_compilation #1632

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
JerryChen97 wants to merge 7 commits into
base: dev
Choose a base branch
from
Open

recursive=False for cancel_inverse of tutorial_circuit_compilation #1632

Changes from all commits
Commits
Show all changes
7 commits
Select commit Hold shift + click to select a range
0307d2c
recursive=False
JerryChen97 Jan 6, 2026
f58f4d9
fix
JerryChen97 Jan 6, 2026
2468072
one more
JerryChen97 Jan 6, 2026
e986064
oops let's stick to partial for now
JerryChen97 Jan 6, 2026
08a1bc4
Merge branch 'dev' into fix-tutorial-circuit-compilation-circ-pics
JerryChen97 Jan 6, 2026
d3b1864
try new default pipelines
JerryChen97 Jan 6, 2026
b9b9c11
Merge remote-tracking branch 'refs/remotes/origin/fix-tutorial-circui…
JerryChen97 Jan 6, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
15 changes: 10 additions & 5 deletions demonstrations_v2/tutorial_circuit_compilation/demo.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -93,7 +93,7 @@ def circuit(angles):
# transform, which removes consecutive inverse operations.
#

cancelled_circuit = qml.transforms.cancel_inverses(commuted_circuit)
cancelled_circuit = qml.transforms.cancel_inverses(commuted_circuit, recursive=False)


qnode = qml.QNode(cancelled_circuit, dev)
Expand Down Expand Up @@ -128,7 +128,7 @@ def circuit(angles):

@qml.qnode(dev)
@partial(qml.transforms.merge_rotations, atol=1e-8, include_gates=None)
@qml.transforms.cancel_inverses
@qml.transforms.cancel_inverses(recursive=False)
@partial(qml.transforms.commute_controlled, direction="right")
def q_fun(angles):
qml.Hadamard(wires=1)
Expand Down Expand Up @@ -163,7 +163,12 @@ def q_fun(angles):
# :func:`~pennylane.compile` function, which yields the same final circuit.
#

compiled_circuit = qml.compile(circuit)
pipelines = [
partial(qml.transforms.commute_controlled, direction="right"),
partial(qml.transforms.cancel_inverses, recursive=False),
partial(qml.transforms.merge_rotations, atol=1e-8, include_gates=None),
]
compiled_circuit = qml.compile(circuit, pipeline=pipelines)

qnode = qml.QNode(compiled_circuit, dev)
qml.draw_mpl(qnode, decimals=1, style="sketch")(angles)
Expand All @@ -178,7 +183,7 @@ def q_fun(angles):
# Let us see the resulting circuit with two passes.
#

compiled_circuit = qml.compile(circuit, num_passes=2)
compiled_circuit = qml.compile(circuit, pipeline=pipelines, num_passes=2)

qnode = qml.QNode(compiled_circuit, dev)
qml.draw_mpl(qnode, decimals=1, style="sketch")(angles)
Expand All @@ -197,7 +202,7 @@ def q_fun(angles):
pipeline=[
partial(qml.transforms.commute_controlled, direction="left"), # Opposite direction
partial(qml.transforms.merge_rotations, include_gates=["RZ"]), # Different threshold
qml.transforms.cancel_inverses, # Cancel inverses after rotations
partial(qml.transforms.cancel_inverses, recursive=False), # Cancel inverses after rotations
],
num_passes=3,
)
Expand Down