Quantum information and algorithms for correlated quantum matter

K Head-Marsden, J Flick, CJ Ciccarino… - Chemical …, 2020 - ACS Publications
Discoveries in quantum materials, which are characterized by the strongly quantum-
mechanical nature of electrons and atoms, have revealed exotic properties that arise from …

Resolving correlated states of benzyne with an error-mitigated contracted quantum eigensolver

SE Smart, JN Boyn, DA Mazziotti - Physical Review A, 2022 - APS
The simulation of strongly correlated many-electron systems is one of the most promising
applications for near-term quantum devices. Here we use a class of eigenvalue solvers …

Magnetic coupling in a tris-hydroxo-bridged chromium dimer occurs through ligand mediated superexchange in conjunction with through-space coupling

P Sharma, DG Truhlar, L Gagliardi - Journal of the American …, 2020 - ACS Publications
Quantum chemistry can explain and predict many properties of molecules and materials.
However, there are some systems, among which are magnetic systems, that remain a …

Non-equilibrium steady state conductivity in cyclo [18] carbon and its boron nitride analogue

AE Raeber, DA Mazziotti - Physical Chemistry Chemical Physics, 2020 - pubs.rsc.org
A ring-shaped carbon allotrope was recently synthesized for the first time, reinvigorating
theoretical interest in this class of molecules. The dual π structure of these molecules allows …

[HTML][HTML] Accurate singlet–triplet gaps in biradicals via the spin averaged anti-Hermitian contracted Schrödinger equation

JN Boyn, DA Mazziotti - The Journal of Chemical Physics, 2021 - pubs.aip.org
The accurate description of biradical systems, and in particular the resolution of their singlet–
triplet gaps, has long posed a major challenge to the development of electronic structure …

Reducing the quantum many-electron problem to two electrons with machine learning

LAM Sager-Smith, DA Mazziotti - Journal of the American …, 2022 - ACS Publications
An outstanding challenge in chemical computation is the many-electron problem where
computational methodologies scale prohibitively with system size. The energy of any …

Interplay of Electronic and Geometric Structure Tunes Organic Biradical Character in Bimetallic Tetrathiafulvalene Tetrathiolate Complexes

JN Boyn, LE McNamara, JS Anderson… - The Journal of …, 2022 - ACS Publications
The synthesis and design of organic biradicals with tunable singlet–triplet gaps have
become the subject of significant research interest, owing to their possible photochemical …

Potential for exciton condensation in a highly conductive amorphous polymer

AO Schouten, JE Klevens, LAM Sager-Smith, J Xie… - Physical Review …, 2023 - APS
An outstanding challenge in synthesis and theory is to develop molecular materials at
ambient conditions that exhibit highly efficient energy transfer. Here we demonstrate the …

[HTML][HTML] Beginnings of exciton condensation in coronene analog of graphene double layer

LAM Sager, AO Schouten, DA Mazziotti - The Journal of Chemical …, 2022 - pubs.aip.org
Exciton condensation, a Bose–Einstein condensation of excitons into a single quantum
state, has recently been achieved in low-dimensional materials including twin layers of …

Donor–Acceptor Conjugated Copolymers Containing Transition-Metal Complex: Intrachain Magnetic Exchange Interactions and Magneto-Optical Activity

X Liu, J Xie, J Niklas, EE Turner, D Yuan… - Chemistry of …, 2022 - ACS Publications
A donor–acceptor conjugated copolymer containing thienothiophene (donor) units and Co
(II) complexes (acceptor) has been synthesized and characterized. The studies of magnetic …