466 citations · 1.8k across the 19 of their papers we have counts for
3 papers · 1 filter
Implementing smooth functions of a Hermitian matrix on a quantum computer
Sathyawageeswar Subramanian, Steve Brierley, Richard Jozsa
We review existing methods for implementing smooth functions f(A) of a sparse Hermitian matrix A on a quantum computer, and analyse a further combination of these techniques which…
Variational Quantum Computation of Excited States
Oscar Higgott, Daochen Wang, Stephen Brierley
The calculation of excited state energies of electronic structure Hamiltonians has many important applications, such as the calculation of optical spectra and reaction rates. While…
Accelerated Variational Quantum Eigensolver
Daochen Wang, Oscar Higgott, Stephen Brierley
The problem of finding the ground state energy of a Hamiltonian using a quantum computer is currently solved using either the quantum phase estimation (QPE) or variational quantum…