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PennyLaneAI · Oct 16, 2023 · 4327304 · 4327304
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diff --git a/doc/_static/templates/state_preparations/cosine_window.png b/doc/_static/templates/state_preparations/cosine_window.png
diff --git a/pennylane/templates/state_preparations/cosine_window.py b/pennylane/templates/state_preparations/cosine_window.py
@@ -27,10 +27,15 @@ class CosineWindow(StatePrepBase):
 
     .. math::
 
-        |\psi\rangle = \sqrt{2^{1-m}}\frac{\sqrt{2}}{\sqrt{2^m}} \sum_{k=0}^{2^m-1} \cos(\frac{\pi k}{2^m} - \frac{\pi}{2}) |k\rangle,
+        |\psi\rangle = \sqrt{2^{1-m}} \sum_{k=0}^{2^m-1} \cos(\frac{\pi k}{2^m} - \frac{\pi}{2}) |k\rangle,
 
     where :math:`m` is the number of wires.
 
+    .. figure:: ../../_static/templates/state_preparations/cosine_window.png
+        :align: center
+        :width: 65%
+        :target: javascript:void(0);
+
     .. note::
 
         The wave function is shifted by :math:`\frac{\pi}{2}` units so that the window is centered.