5 papers
Programmable digital quantum simulation of 2D Fermi-Hubbard dynamics using 72 superconducting qubits
Faisal Alam, Jan Lukas Bosse, Ieva ÄepaitÄ +32
Simulating the time-dynamics of quantum many-body systems was the original use of quantum computers proposed by Feynman, motivated by the critical role of quantum interactions betw…
Fermionic dynamics on a trapped-ion quantum computer beyond exact classical simulation
Faisal Alam, Jan Lukas Bosse, Ieva ÄepaitÄ +37
Simulation of the time-dynamics of fermionic many-body systems has long been predicted to be one of the key applications of quantum computers. Such simulations -- for which classic…
Improving time dynamics simulation by sampling the error unitary
Lana Mineh, Adrian Chapman, Raul A. Santos
We introduce an algorithm to improve the error scaling of product formulas by randomly sampling the generator of their exact error unitary. Our approach takes an arbitrary product…
Benchmarking a wide range of optimisers for solving the Fermi-Hubbard model using the variational quantum eigensolver
Benjamin D. M. Jones, Lana Mineh, Ashley Montanaro
We numerically benchmark 30 optimisers on 372 instances of the variational quantum eigensolver for solving the Fermi-Hubbard system with the Hamiltonian variational ansatz. We rank…
Applying the quantum approximate optimization algorithm to general constraint satisfaction problems
Sami Boulebnane, Maria Ciudad-Alañón, Lana Mineh +2
In this work we develop theoretical techniques for analysing the performance of the quantum approximate optimization algorithm (QAOA) when applied to random boolean constraint sati…