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Impact of conditional modelling for a universal autoregressive quantum state
Massimo Bortone, Yannic Rath, George H. Booth
We present a generalized framework to adapt universal quantum state approximators, enabling them to satisfy rigorous normalization and autoregressive properties. We also introduce…
The Variational Quantum Eigensolver: a review of methods and best practices
Jules Tilly, Hongxiang Chen, Shuxiang Cao +8
The variational quantum eigensolver (or VQE) uses the variational principle to compute the ground state energy of a Hamiltonian, a problem that is central to quantum chemistry and…
A variational quantum eigensolver for dynamic correlation functions
Hongxiang Chen, Max Nusspickel, Jules Tilly +1
Recent practical approaches for the use of current generation noisy quantum devices in the simulation of quantum many-body problems have been dominated by the use of a variational…
Reduced Density Matrix Sampling: Self-consistent Embedding and Multiscale Electronic Structure on Current Generation Quantum Computers
Jules Tilly, P. V. Sriluckshmy, Akashkumar Patel +6
We investigate fully self-consistent multiscale quantum-classical algorithms on current generation superconducting quantum computers, in a unified approach to tackle the correlated…
Automatic Post-selection by Ancillae Thermalisation
Lewis Wright, Fergus Barratt, James Dborin +2
Tasks such as classification of data and determining the groundstate of a Hamiltonian cannot be carried out through purely unitary quantum evolution. Instead, the inherent non-unit…
Controlling Arbitrary Observables in Correlated Many-body Systems
Gerard McCaul, Christopher Orthodoxou, Kurt Jacobs +2
Here we present an expanded analysis of a model for the manipulation and control of observables in a strongly correlated, many-body system, which was first presented in [McCaul et…