ansatz doc updates, sphinxcontrib-katex dependency

qiboteam · Sep 6, 2023 · 7a58546 · 7a58546
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diff --git a/docs/source/getting-started/ansatz.rst b/docs/source/getting-started/ansatz.rst
@@ -7,20 +7,34 @@ A quantum circuit consisting of parameterized gates RX(theta), RY(theta) and RZ(
 Hardware Efficient Ansatz
 -------------------------
 
-Qibochem provides a hardware efficient ansatz that simply consists of a layer of single qubit rotation gates followed by a layer of two-qubit gates that entangle the qubits. 
+Qibochem provides a hardware efficient ansatz that simply consists of a layer of single qubit rotation gates followed by a layer of two-qubit gates that entangle the qubits. For the H\ :sub:`2` case discussed in previous sections, a possible hardware efficient ansatz can be constructed as such:
 
 .. image:: qibochem_doc_ansatz_hardware-efficient.svg
 
 Example
 ^^^^^^^
 
+Placeholder for hardware-efficient ansatz example
+
+
 Unitary Coupled Cluster Ansatz
 ------------------------------
 
-The Unitary Coupled Cluster ansatz [#f1]_ [#f2]_
+The Unitary Coupled Cluster ansatz [#f1]_ [#f2]_ is a variant of the popular gold standard Coupled Cluster ansatz [#f3]_ of quantum chemistry. The unitary coupled cluster wave function is a parameterized unitary transformation of a reference wave function, of which a common choice is the Hartree-Fock wave function. 
+
+.. math:: 
+
+    |\psi_{\mathrm{UCC}}\rangle = U(\theta)|\psi_{\mathrm{ref}}\rangle
+
+Example
+^^^^^^^
+
+Placeholder for UCCD example
 
 .. rubric:: References
 
 .. [#f1] Whitfield, J. D. et al., 'Simulation of electronic structure Hamiltonians using quantum computers', Mol. Phys. 109 (2011) 735.
 
-.. [#f2] Anand. A. et al., 'A quantum computing view on unitary coupled cluster theory', Chem. Soc. Rev. 51 (2022) 1659. 
+.. [#f2] Anand. A. et al., 'A quantum computing view on unitary coupled cluster theory', Chem. Soc. Rev. 51 (2022) 1659. 
+
+.. [#f3] Crawford, T. D. et al., 'An Introduction to Coupled Cluster Theory for Computational Chemists', in Reviews in Computational Chemistry 14 (2007) 33. 
diff --git a/pyproject.toml b/pyproject.toml
@@ -32,6 +32,7 @@ sphinx = "^6.1.3"
 furo = "^2023.3.27"
 recommonmark = "^0.7.1"
 sphinxcontrib-bibtex = "^2.5.0"
+sphinxcontrib-katex = "^0.9.7"
 sphinx-markdown-tables = "^0.0.17"
 nbsphinx = "^0.9.1"
 ipython = "^8.12.0"