Informal discussion group focusing on the application of Quantum Computing to Quantum Chemistry.

We meet fortnightly for lunch, mostly during term time - talks are given in a hybrid format, but pizza is provided!

Speakers come from a wide variety of backgrounds - anyone interested in or currently working in quantum information is welcome. Please let us know if you have any suggestions for future discussion topics or speakers; a list of previous and upcoming discussions can be found below.

Join the mailing list to be notified about upcoming meetings.

📽 Most talks can be found on our YouTube channel.

Contact: ucam-qcdg@lists.cam.ac.ukcnl29@cam.ac.uklc892@cam.ac.uk

Schedule
DetailsDescription / Key wordsTalkPresented byAffiliation
18/06/25
Todd-Hamied, Department of Chemistry
 Dynamics from statics: A conceptual reformulation of Green’s function perturbation theoriesOliver BackhouseQuantinuum

 

Previous discussions
Date Description / Key wordsTitlePresented byAffiliation
04/06/25 Bayesian quantum phase estimation with multiple quantum computers

📽 Recording available here.
Walden KillickCambridge Consultants
14/05/25 Hamiltonian dynamics simulation using linear combination of unitaries on an ion trap quantum computer

📽 Recording available here.
Michelle W SzeQuantinuum
19/02/25 & 12/03/25 Exact Space Spin Factorisation of the Full Fermionic Wave Function under U(n) x SU(2)Nathan FitzpatrickQuantinuum
05/02/25 

Fault-tolerant quantum simulation of generalized Hubbard models

📽 Recording available here.

Nick BluntRiverlane
23/10/2024 

Quantum state preparation via piecewise QSVT

📽 Recording available here.

Oliver O'BrienDepartment of Applied Mathematics and Theoretical Physics
06/11/24 

Multireference State Preparation and Quantum Computed Moments in InQuanto

📽 Recording available here.

Gabriel Greene-DinizQuantinuum
23/10/2024 Introduction to Direct Fidelity EstimationJedrzej BurkatDepartment of Physics
13/06/2024LCU Parallelisation 

Low-Overhead Parallelisation of LCU via Commuting Operators

📽 Recording available here.

Gregory BoydQuantum Technology Theory Group, University of Oxford
06/06/2024Variational Fast Forwarding

Variational Phase Estimation with Variational Fast Forwarding

📽 Recording available here.

Maria-Andreea FilipMax Planck Institute for Solid State Research, Stuttgart
16/05/2024Simulation of mixed spin-boson for cavity quantum electrodynamicsQuantum computing simulation of a mixed spin-boson Hamiltonian and its performance for a cavity quantum electrodynamics problemMaria TudorovskayaQuantinuum
02/05/2024A guide to one-to-one fermion–qubit mappings

Discovering optimal fermion-qubit mappings through algorithmic enumeration

📽 Recording available here.

Mitchell ChiewCentre for Quantum Information and Foundations, Cambridge
14/03/2024Energy Landscapes of VQAs

Energy Landscapes of VQAs

📽 Recording available here.

Choy BoyWales group
05/02/2024Quantum attacks on signature schemesQuantum attacks on signature schemesMarcel MordarskiElkouss group, OIST
15/11/2023Quantum signal processing and qubitisation tutorial

Quantum signal processing and qubitisation tutorial

📽 Recording available here.

Nathan FitzpatrickQuantinuum
25/10/2023Adapting the HHL algorithm to (non-unitary) quantum many-body theory

Adapting the HHL algorithm to (non-unitary) quantum many-body theory

📽 Recording available here.

Marcel MordarskiElkouss group, OIST
11/10/2023
 
Correcting spanning errors with a fractal codeCorrecting spanning errors with a fractal codeGeorgia M. NixonDepartment of Physics
17/08/2023Introduction to QECQuantum Error Correction workshopBen CrigerQuantinuum
12/06/2023Classical shadowsPredicting many properties of a quantum system from very few measurementsRowan Poklewski-KoziellThom group
25/05/2023 Reducing the molecular electronic Hamiltonian encoding costs on quantum computers by symmetry shiftsNathan FitzpatrickQuantinuum
02/05/2023 Evaluating the evidence for exponential quantum advantage in ground-state quantum chemistryIlyes BatatiaDepartment of Engineering
29/03/2023 A four-qubit germanium quantum processorMarcel MordarskiDepartment of Physics
07/03/2023 Noise-assisted digital quantum simulation of open systemsLila Cadi TaziThom group
21/02/2023Attainable accuracy using variational algorithms for quantum chemistryVariational quantum chemistry requires gate-error probabilities below the fault-tolerance threshold  
31/01/2023Interfacing Quantum and Machine Learning - Gradients on QC

Evaluating analytic gradients on quantum hardware

Avoiding local minima in Variational Quantum Algorithms with Neural Networks

Lila Cadi Tazi and Chiara LeadbeaterThom group
22/11/2022Linear Combination of UnitariesOral presentationNathan FitzpatrickQuantinuum
08/11/2022CNOT efficient fermionic excitationsCNOT-Efficient Circuits for Arbitrary Rank Many-Body Fermionic and Qubit ExcitationsMaria-Andreea FilipThom group
18/10/2022Entanglement Transformations

Conditions for a class of entanglement transformations

Majorization and the interconversion of bipartite states

Chiara LeadbeaterThom group