Arkopal Dutt, Edwin Pednault, et al.
PRResearch
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.
Arkopal Dutt, Edwin Pednault, et al.
PRResearch
Hong-ye Hu, Andi Gu, et al.
APS March Meeting 2024
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APS March Meeting 2021
Marco Antonio Guimaraes Auad Barroca, Rodrigo Neumann Barros Ferreira, et al.
Paraty Quantum Information School and Workshop 2023