Add fluxonium modelling and transmon–fluxonium comparison to scqubits notebook

docs/bibliography.bib

@@ -507,6 +507,17 @@ @book{simonsCoplanarWaveguideCircuits2001
   isbn = {978-0-471-46393-1},
   langid = {english}
 }
+@article{somoroff_millisecond_2023,
+  title = {Millisecond {{Coherence}} in a {{Superconducting Qubit}}},
+  author = {Somoroff, Aaron and Ficheux, Quentin and Mencia, Raymond A. and Xiong, Haonan and Kuzmin, Roman and Manucharyan, Vladimir E.},
+  year = {2023},
+  month = feb,
+  journal = {Physical Review Letters},
+  volume = {130},
+  number = {26},
+  pages = {267001},
+  doi = {10.1103/PhysRevLett.130.267001}
+}
 @book{tinkhamIntroductionSuperconductivity2015,
   title = {Introduction to Superconductivity},
   author = {Tinkham, Michael},
@@ -569,3 +580,34 @@ @article{yostSolidstateQubitsIntegrated2020
   doi = {10.1038/s41534-020-00289-8},
   langid = {english}
 }
+@article{zhang_tunable_2024,
+  title = {Tunable inductive coupler for high fidelity gates between fluxonium qubits},
+  author = {Zhang, Helin and Ding, Chunyang and Weiss, D. K. and Huang, Ziwen and Ma, Yuwei and Guinn, Charles and Sussman, Sara and Chitta, Sai Pavan and Chen, Danyang and Houck, Andrew A. and Koch, Jens and Schuster, David I.},
+  journal = {Physical Review Letters},
+  volume = {132},
+  issue = {2},
+  pages = {020601},
+  year = {2024},
+  doi = {10.1103/PhysRevLett.132.020601}
+}
+@article{zhang_universal_2021,
+  title = {Universal fast flux control of a coherent, low-frequency qubit},
+  author = {Zhang, Helin and Chakram, Srivatsan and Roy, Tanay and Earnest, Nathan and Lu, Yao and Huang, Ziwen and Weiss, Daniel and Koch, Jens and Schuster, David I.},
+  journal = {Physical Review X},
+  volume = {11},
+  issue = {1},
+  pages = {011010},
+  year = {2021},
+  doi = {10.1103/PhysRevX.11.011010}
+}
+@article{zhu_circuit_2013,
+  title = {Circuit {{QED}} with Fluxonium Qubits: {{Theory}} of the Dispersive Regime},
+  author = {Zhu, Guanyu and Koch, David G. and Braunstein, Samuel L. and Ferguson, David G. and Koch, Jens},
+  year = {2013},
+  month = jan,
+  journal = {Physical Review B},
+  volume = {87},
+  number = {2},
+  pages = {024510},
+  doi = {10.1103/PhysRevB.87.024510}
+}

docs/notebooks.rst

@@ -164,16 +164,20 @@ and coupling strengths that feed back into the layout design
 
 - Computing transmon qubit frequency (:math:`\omega_{01}`) and anharmonicity
   (:math:`\alpha`) from Josephson energy :math:`E_J` and charging energy :math:`E_C`.
-- Calculating the dispersive shift :math:`\chi` of a transmon–resonator system for
-  readout design.
+- Analysing fluxonium qubit spectra from :math:`E_J`, :math:`E_C`, :math:`E_L`, and
+  external flux.
+- Calculating the dispersive shift :math:`\chi` of a qubit–resonator system for readout
+  design.
+- Comparing design trade-offs between transmon and fluxonium qubits.
 - Translating Hamiltonian-level parameters into physical layout dimensions.
 
 **Notebooks:**
 
-- :doc:`notebooks/scqubits_parameter_calculation` — Full numerical diagonalization of
-  the transmon–resonator Hamiltonian with scQubits
-  :cite:`groszkowskiScqubitsPythonPackage2021`, compared against analytical perturbation
-  theory.
+- :doc:`notebooks/scqubits_parameter_calculation` — Numerical diagonalization of
+  transmon– and fluxonium–resonator Hamiltonians with scQubits
+  :cite:`groszkowskiScqubitsPythonPackage2021`, including a side-by-side comparison of
+  anharmonicity, dispersive shift, and design trade-offs between the two qubit
+  modalities.
 - :doc:`notebooks/pymablock_dispersive_shift` — Perturbative block-diagonalization with
   Pymablock :cite:`arayaDayPymablockAlgorithmPackage2025` to compute the dispersive
   shift symbolically and map the result to layout parameters.