Emerging quantum computing algorithms for quantum chemistry

M Motta, JE Rice - Wiley Interdisciplinary Reviews …, 2022 - Wiley Online Library
Digital quantum computers provide a computational framework for solving the Schrödinger
equation for a variety of many‐particle systems. Quantum computing algorithms for the …

Subspace methods for electronic structure simulations on quantum computers

M Motta, W Kirby, I Liepuoniute, KJ Sung… - Electronic …, 2024 - iopscience.iop.org
Quantum subspace methods (QSMs) are a class of quantum computing algorithms where
the time-independent Schrödinger equation for a quantum system is projected onto a …

Quantum-centric supercomputing for materials science: A perspective on challenges and future directions

Y Alexeev, M Amsler, MA Barroca, S Bassini… - Future Generation …, 2024 - Elsevier
Computational models are an essential tool for the design, characterization, and discovery
of novel materials. Computationally hard tasks in materials science stretch the limits of …

Exact and efficient Lanczos method on a quantum computer

W Kirby, M Motta, A Mezzacapo - Quantum, 2023 - quantum-journal.org
We present an algorithm that uses block encoding on a quantum computer to exactly
construct a Krylov space, which can be used as the basis for the Lanczos method to estimate …

Reducing the runtime of fault-tolerant quantum simulations in chemistry through symmetry-compressed double factorization

D Rocca, CL Cortes, JF Gonthier… - Journal of Chemical …, 2024 - ACS Publications
Quantum phase estimation based on qubitization is the state-of-the-art fault-tolerant
quantum algorithm for computing ground-state energies in chemical applications. In this …

Quantum chemistry simulation of ground-and excited-state properties of the sulfonium cation on a superconducting quantum processor

M Motta, GO Jones, JE Rice, TP Gujarati… - Chemical …, 2023 - pubs.rsc.org
The computational description of correlated electronic structure, and particularly of excited
states of many-electron systems, is an anticipated application for quantum devices. An …

Quantum simulation of molecular response properties in the nisq era

A Kumar, A Asthana, V Abraham… - Journal of Chemical …, 2023 - ACS Publications
Accurate modeling of the response of molecular systems to an external electromagnetic field
is challenging on classical computers, especially in the regime of strong electronic …

Fluid fermionic fragments for optimizing quantum measurements of electronic Hamiltonians in the variational quantum eigensolver

S Choi, I Loaiza, AF Izmaylov - Quantum, 2023 - quantum-journal.org
Measuring the expectation value of the molecular electronic Hamiltonian is one of the
challenging parts of the variational quantum eigensolver. A widely used strategy is to …

Quantum simulation of molecular electronic states with a transcorrelated Hamiltonian: higher accuracy with fewer qubits

A Kumar, A Asthana, C Masteran… - Journal of chemical …, 2022 - ACS Publications
Simulation of electronic structure is one of the most promising applications on noisy
intermediate-scale quantum (NISQ) era devices. However, NISQ devices suffer from a …

Tailored and externally corrected coupled cluster with quantum inputs

M Scheurer, GLR Anselmetti, O Oumarou… - Journal of Chemical …, 2024 - ACS Publications
We propose to use wave function overlaps obtained from a quantum computer as inputs for
the classical split-amplitude techniques, tailored and externally corrected coupled cluster, to …