Providing proper citation

PennyLaneAI · Jul 3, 2024 · d544df1 · d544df1
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diff --git a/demonstrations/tutorial_How_to_simulate_quantum_circuits_with_tensor_networks.metadata.json b/demonstrations/tutorial_How_to_simulate_quantum_circuits_with_tensor_networks.metadata.json
@@ -12,7 +12,9 @@
  "Quantum Computing",
  "Devices and Performance"
  ],
- "tags": ["how to"],
+ "tags": [
+ "how to"
+ ],
  "previewImages": [
  {
  "type": "thumbnail",
@@ -22,7 +24,17 @@
  "seoDescription": "Learn how to simulate quantum circuits with tensor networks using DefaultTensor.",
  "doi": "",
  "canonicalURL": "/qml/demos/tutorial_how_simulate_quantum_circuits_with_tensor_networks_using_DefaultTensor",
- "references": [],
+ "references": [
+ {
+ "id": "orus",
+ "type": "article",
+ "title": "A practical introduction to tensor networks: Matrix product states and projected entangled pair states",
+ "authors": "R. Orús",
+ "year": "2014",
+ "journal": "Annals of Physics",
+ "url": "https://www.sciencedirect.com/science/article/pii/S0003491614001596"
+ }
+ ],
  "basedOnPapers": [],
  "referencedByPapers": [],
  "relatedContent": [
@@ -31,5 +43,5 @@
  "id": "tutorial_tn_circuits",
  "weight": 1.0
  }
- ] 
+ ]
 }
diff --git a/demonstrations/tutorial_How_to_simulate_quantum_circuits_with_tensor_networks.py b/demonstrations/tutorial_How_to_simulate_quantum_circuits_with_tensor_networks.py
@@ -116,7 +116,7 @@ def circuit(theta, phi, num_qubits):
 # Therefore, the structure of the MPS is maintained after each gate application.
 #
 # To learn more about the MPS method and its theoretical background,
-# we refer to the extensive literature available on the subject, such as the `introduction paper <https://arxiv.org/abs/1306.2164>`__ by Orus.
+# we refer to the extensive literature available on the subject, such as [#orus]_.
 #
 
 ######################################################################
@@ -199,6 +199,14 @@ def circuit(theta, depth, num_qubits):
 circuit(theta, depth, num_qubits=15)
 dev.draw(color="auto", show_inds=True, return_fig=True)
 
+######################################################################
+# References
+# ----------
+# .. [#orus]
+#
+# R. Orús, Annals of Physics 349, 117 (2014), ISSN 0003-
+# 4916, URL https://www.sciencedirect.com/science/article/pii/S0003491614001596.
+
 ######################################################################
 # About the author
 # ----------------