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 …

Electronic excited states from a variance-based contracted quantum eigensolver

Y Wang, DA Mazziotti - Physical Review A, 2023‏ - APS
Electronic excited states of molecules are central to many physical and chemical processes,
and yet they are typically more difficult to compute than ground states. In this paper we …

Simulation of a Diels–Alder reaction on a quantum computer

I Liepuoniute, M Motta, T Pellegrini, JE Rice… - Physical Chemistry …, 2024‏ - pubs.rsc.org
The simulation of chemical reactions is an anticipated application of quantum computers.
Using a Diels–Alder reaction as a test case, in this study we explore the potential …

Simulating Vibrational Dynamics on Bosonic Quantum Devices

S Malpathak, SD Kallullathil… - The Journal of Physical …, 2024‏ - ACS Publications
Bosonic quantum devices, which utilize harmonic oscillator modes to encode information,
are emerging as a promising alternative to conventional qubit-based quantum devices …

Probing Quantum Efficiency: Exploring System Hardness in Electronic Ground State Energy Estimation

S Choi, I Loaiza, RA Lang… - Journal of Chemical …, 2024‏ - ACS Publications
We consider the question of how correlated the system hardness is between classical
algorithms of electronic structure theory in ground state estimation and quantum algorithms …

Quantum Measurement for Quantum Chemistry on a Quantum Computer

S Patel, P Jayakumar, TC Yen, AF Izmaylov - arxiv preprint arxiv …, 2025‏ - arxiv.org
Quantum chemistry is among the most promising applications of quantum computing,
offering the potential to solve complex electronic structure problems more efficiently than …

Fighting noise with noise: a stochastic projective quantum eigensolver

MA Filip - Journal of Chemical Theory and Computation, 2024‏ - ACS Publications
In the current noisy intermediate scale quantum era of quantum computation, available
hardware is severely limited by both qubit count and noise levels, precluding the application …

Quantum computation of π → π* and n → π* excited states of aromatic heterocycles

MA Castellanos, M Motta, JE Rice - Molecular Physics, 2024‏ - Taylor & Francis
The computation of excited electronic states is an important application for quantum
computers. In this work, we simulate the excited state spectra of four aromatic heterocycles …

Occupation-number quantum-subspace-expansion approach to computing the single-particle Green function: An opportunity for noise filtering

B Gauthier, P Rosenberg, A Foley, M Charlebois - Physical Review A, 2024‏ - APS
We introduce a hybrid quantum-classical algorithm to compute the Green function for
strongly correlated electrons on noisy intermediate-scale quantum (NISQ) devices. The …