Thomas Steckmann, Alireza Seif, et al.
APS March Meeting 2024
Variational quantum time evolution (VarQTE) allows us to simulate dynamical quantum systems with parameterized quantum circuits. We derive a posteriori, global phase-agnostic error bounds for real and imaginary time evolution based on McLachlan's variational principle that can be evaluated efficiently. Rigorous error bounds are crucial in practice to adaptively choose variational circuits and to analyze the quality of optimization algorithms. The power of the new error bounds, as well as, the performance of VarQTE are demonstrated on numerical examples.
Thomas Steckmann, Alireza Seif, et al.
APS March Meeting 2024
Zhihao Xiao, Archana Kamal, et al.
APS March Meeting 2023
Ieva Liepuoniute, Mario Motta, et al.
ACS Fall 2024
F. Balduini, A. Molinari, et al.
Physical Review B