152 citations · 665 across the 19 of their papers we have counts for
19 papers
Quantum algorithms for grid-based variational time evolution
Pauline J Ollitrault, Sven Jandura, Alexander Miessen +4
The simulation of quantum dynamics calls for quantum algorithms working in first quantized grid encodings. Here, we propose a variational quantum algorithm for performing quantum d…
Dynamical approximations for composite quantum systems: Assessment of error estimates for a separable ansatz
Irene Burghardt, Rémi Carles, Clotilde Fermanian Kammerer +2
Numerical studies are presented to assess error estimates for a separable (Hartree) approximation for dynamically evolving composite quantum systems which exhibit distinct scales d…
Excitons: Energetics and spatio-temporal dynamics
Seogjoo J. Jang, Irene Burghardt, Chao-Ping Hsu +1
The concept of an exciton as a quasiparticle that represents collective excited states was originally adapted from solid-state physics and has been successfully applied to molecula…
Quantum Dynamics with Electronic Friction
Rocco Martinazzo, Irene Burghardt
A theory of electronic friction is developed using the exact factorization of the electron-nuclear wavefunction. No assumption is made regarding the electronic bath, which can be m…
Comment on "Regularizing the MCTDH equations of motion through an optimal choice on-the-fly (i.e., spawning) of unoccupied single-particle functions" [D. Mendive-Tapia, H.-D. Meyer, J. Chem. Phys. 153, 234114 (2020)]
Rocco Martinazzo, Irene Burghardt
The purpose of the present Comment is to point out the connection between an approach to spawning and regularization that was recently introduced by D. Mendive-Tapia and H.-D. Meye…
Separation of scales: Dynamical approximations for composite quantum systems
Irene Burghardt, Rémi Carles, Clotilde Fermanian Kammerer +2
We consider composite quantum-dynamical systems that can be partitioned into weakly interacting subsystems, similar to system-bath type situations. Using a factorized wave function…