Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 23: Quantum Information I
Q 23.12: Poster
Dienstag, 15. März 2022, 16:30–18:30, P
Assessing the Precision of Quantum Simulation of Many-Body Effects in Atomic Systems using the Variational Quantum Eigensolver Algorithm — •Sumeet Sumeet1,2,3, V. S. Prasannaa3, B. P. Das4, and B. K. Sahoo5 — 1Lehrstuhl fur Theoretische Physik I, Staudtstraße 7,FAU Erlangen-Nuremberg, D-91058 Erlangen, Germany — 2Qu & Co B.V., Palestrinastraat 12H, 1071 LE Amsterdam, The Netherlands — 3Centre for Quantum Engineering, Research and Education,TCG CREST, Salt Lake, Kolkata 700091, India — 4Department of Physics, Tokyo Institute of Technology,2-12-1-H86 Ookayama, Meguro-ku, Tokyo 152-8550, Japan — 5Atomic, Molecular and Optical Physics Division,Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India
In this pilot study, we investigate the physical effects beyond the mean-field approximation, known as electron correlation, in the ground state energies of atomic systems using the classical-quantum hybrid variational quantum eigensolver (VQE) algorithm in a quantum simulation. To this end, we consider three isoelectronic species. We employ the unitary coupled-cluster (UCC) ansatz to perform a rigorous analysis of two very important factors that could affect the precision of the simulations of electron correlation effects within a basis, namely mapping and backend simulator. When more qubits become available, our study will serve as among the first steps taken towards computing other properties of interest to various applications such as new physics beyond the Standard Model of elementary particles and atomic clocks using the VQE algorithm.