Dresden 2020 – scientific programme
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AKPIK: Arbeitskreis Physik, moderne Informationstechnologie und Künstliche Intelligenz
AKPIK 1: AKPIK Talks
AKPIK 1.8: Talk
Monday, March 16, 2020, 18:30–18:45, HSZ 301
Quantum-computer calculations of the ground state energy of negative hydrogen ion — •Ivana Miháliková1,2, Martin Friák1,2, Matej Pivoluska3, Martin Plesch3, and Mojmír Šob4,1,5 — 1Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Brno, Czech Republic — 2Department of Condensed Matter Physics, Faculty of Science, Masaryk University, Brno, Czech Republic — 3Institute of Computer Science, Masaryk University, Brno, Czech Republic — 4Central European Institute of Technology, CEITEC MU, Masaryk University, Brno, Czech Republic — 5Department of Chemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
Quantum computing has become one of the most popular applications of quantum physics. Importantly, it is believed that quantum computers will surpass the efficiency of classical computers in near future. A wide range of problems in condensed matter physics and chemistry could be solved by quantum computers. Nowadays, IBM provides a cloud-based quantum computing platform (IBM Quantum Experience) offering five-qubit and sixteen-qubit quantum processors for a real run. In our study, we focused on the quantum simulation of negative hydrogen ion. We perform the simulations of the H− ground state energy using Variational Quantum Eigensolver (VQE). Simulations were performed on the QASM simulator and also on five-qubit device. In order to obtain the ground state energy of the negative hydrogen ion we used several local optimization methods to converge energy of the system to the energy minimum.