remove Tensor handling from device

PennyLaneAI · Nov 15, 2024 · 0675bce · 0675bce
1 parent f9200c0
commit 0675bce
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,6 +6,10 @@
 
 ### Breaking changes 💔
 
+* Support for the `pennylane.operation.Tensor` observable is removed. This observable was deprecated,
+  and is fully removed in PennyLane 0.40.
+  [(#)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/)
+
 ### Deprecations 👋
 
 ### Documentation 📝

diff --git a/pennylane_rigetti/qpu.py b/pennylane_rigetti/qpu.py
@@ -24,7 +24,6 @@
 
 import numpy as np
 from pennylane.measurements import Expectation
-from pennylane.operation import Tensor
 from pennylane.ops import Prod
 from pennylane.tape import QuantumTape
 from pyquil import get_qc
@@ -142,7 +141,7 @@ def expval(self, observable, shot_range=None, bin_size=None):
                 pauli_obs = sZ(wire)
 
             # Multi-qubit observable
-            elif len(device_wires) > 1 and isinstance(observable, (Tensor, Prod)):
+            elif len(device_wires) > 1 and isinstance(observable, Prod):
                 # All observables are rotated to be measured in the Z-basis, so we just need to
                 # check which wires exist in the observable, map them to physical qubits, and measure
                 # the product of PauliZ operators on those qubits