Improve computation time of compute_matrix for parametric ops (#2759)

* separated out speedup PR * revert IsingXY change * alternative version * black * more working stuff? * tmp * converged RZ.compute_matrix * converged compute_eigvals * tests * converged matrices and eigvals for diagonal operations * compatibility * test coverage * isingxy registration * test attrs * isingxy: additional tests and compatibility of compute_eigvals * fix U1 matrix
PennyLaneAI · Jul 27, 2022 · 465642b · 465642b
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diff --git a/doc/releases/changelog-dev.md b/doc/releases/changelog-dev.md
@@ -268,6 +268,10 @@ of operators. [(#2622)](https://github.com/PennyLaneAI/pennylane/pull/2622)
 
 <h3>Improvements</h3>
 
+* A small performance upgrade to the `compute_matrix` method
+  of broadcastable parametric operations.
+  [(#2726)](https://github.com/PennyLaneAI/pennylane/pull/2726)
+
 * Jacobians are cached with the Autograd interface when using the
   parameter-shift rule.
   [(#2645)](https://github.com/PennyLaneAI/pennylane/pull/2645)

diff --git a/pennylane/ops/qubit/attributes.py b/pennylane/ops/qubit/attributes.py
@@ -223,6 +223,7 @@ def __contains__(self, obj):
         "IsingXX",
         "IsingYY",
         "IsingZZ",
+        "IsingXY",
     ]
 )
 """Attribute: Operations that support parameter broadcasting.