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quant-ph2024
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…
quant-ph2024
Testing multipartite productness is easier than testing bipartite productness
Benjamin D. M. Jones, Ashley Montanaro
We prove a lower bound on the number of copies needed to test the property of a multipartite quantum state being product across some bipartition (i.e. not genuinely multipartite en…
quant-ph2023
The Hadamard gate cannot be replaced by a resource state in universal quantum computation
Benjamin D. M. Jones, Noah Linden, Paul Skrzypczyk
We consider models of quantum computation that involve operations performed on some fixed resourceful quantum state. Examples that fit this paradigm include magic state injection a…