Accurate Computation of Relativistic Excitation Energies Using Quantum Annealing

• URL: http://arxiv.org/abs/2212.01801v3
• Date: Mon, 22 May 2023 11:44:23 GMT
• Title: Accurate Computation of Relativistic Excitation Energies Using Quantum Annealing
• Authors: Vikrant Kumar, Nishanth Baskaran, V. S. Prasannaa, K. Sugisaki, D. Mukherjee, K.G. Dyall, B. P. Das
• Abstract summary: We report the first results for the computation of relativistic effects in quantum many-body systems using quantum annealers. An average accuracy of 98.9% in the fine structure splitting of boron-like ions with respect to experiments has been achieved using the Quantum Annealersolver (QAE) algorithm on the D-Wave Advantage hardware.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We report the first results for the computation of relativistic effects in quantum many-body systems using quantum annealers. An average accuracy of 98.9% in the fine structure splitting of boron-like ions with respect to experiments has been achieved using the Quantum Annealer Eigensolver (QAE) algorithm on the D-Wave Advantage hardware. We obtain these results in the framework of the many-electron Dirac theory. We implement QAE through our quantum annealing workflow that includes a novel qubit encoding scheme and a perturbation theory-based decomposition strategy.

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