fix bug

qiboteam · Dec 13, 2023 · 4e617c2 · 4e617c2
1 parent df3189e
commit 4e617c2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/qibo/quantum_info/quantum_networks.py b/src/qibo/quantum_info/quantum_networks.py
@@ -279,7 +279,7 @@ def apply(self, state):
         Returns:
             ndarray: Resulting state :math:`\\mathcal{E}(\\varrho)`.
         """
-        if self.is_pure():
+        if self.is_pure:
             return np.einsum("jk,lm,jl -> km", self.matrix, np.conj(self.matrix), state)
 
         return np.einsum("jklm,kl -> jl", self.matrix, state)