catalyst

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[linux x86-64] Invalid wire is valid measurement.

2

#### Issue description Test case: ```python from catalyst import qjit, measure import pennylane as qml @qjit @qml.qnode(qml.device("lightning.qubit", wires=2)) def circuit(x: int): return measure(x) circuit(0) circuit(1) circuit(2) ``` * *Expected behavior:*...

erick-xanadu

Two issues are uncovered in the referenced discussion: - Which errors are raised during a fallback to Python? Sometimes it is clear the user intended to perform an autograph conversion,...

dime10

[BUG] Passing observables as parameters triggers an exception

2

```python import pennylane as qml import pytest from catalyst import qjit def test_observable_as_parameter(backend): """Test to see if we can pass an observable parameter to qfunc.""" coeffs0 = [0.3, -5.1] H0...

erick-xanadu

[Frontend] Remove special handling for Hamiltonians primitives

12

Once this [issue](https://github.com/PennyLaneAI/pennylane/issues/4263) in PL is resolved, apply the following patch: ```diff diff --git a/frontend/catalyst/jax_tracer.py b/frontend/catalyst/jax_tracer.py index 0205381..f7bddb6 100644 --- a/frontend/catalyst/jax_tracer.py +++ b/frontend/catalyst/jax_tracer.py @@ -352,24 +352,6 @@ def trace_quantum_tape( return...

erick-xanadu

[Frontend] Added test_broadcast_double_odd to test_template.py

7

See issue https://github.com/PennyLaneAI/catalyst/issues/59 Parameters are taken from here: https://docs.pennylane.ai/en/stable/code/api/pennylane.broadcast.html

ndcroos

[Frontend] The lack of a device specific decomposition logic

1

We currently serve all backend devices in a way that they all support an identical set of quantum gates. This design assumption would lead to the failure of decomposition rules...

maliasadi

Some tests fail when tensorflow is imported before catalyst

1

The imports ``` import tensorflow import catalyst ``` do not always work, and some tests are failing if tensorflow is imported first. We can see that in when testing the...

rmoyard

[BUG] Classical pre-processing not working when using `grad` with enzyme

3

The following code, with no classical post-processing on the function we are computing the gradient of, works correctly: ```python @qjit def f(x): @qml.qnode(dev) def g(y): qml.RX(y, wires=0) return qml.expval(qml.PauliZ(0)) return...

josh146

[BUG] ImportError of GLIBCXX in Catalyst frontend

8

#### Issue description I am experiencing issues when importing Catalyst that seem to depend on where and how the library is imported. It might be specific to my installation (I...

glassnotes

The future improvement reminder issue. The nested tape tracer introduced by https://github.com/PennyLaneAI/catalyst/pull/240 relies on the [topological sorting](https://github.com/PennyLaneAI/catalyst/blob/64fb970d8979254664863edadcd7f76113cec624/frontend/catalyst/utils/jax_extras.py#L163) which might need reviewing. The sorting is used as the final step in...

sergei-mironov