Detection of energy levels of a spin system on a quantum computer by probe spin evolution
Quantum Physics
2023-01-05 v2
Abstract
We propose a method for detection of energy levels of arbitrary spin system on a quantum computer based on studies of evolution of only one probe spin. On the basis of the proposed method energy levels of spin systems are found on IBM's quantum computer ibmq-bogota, among them are spin chain in magnetic field, triangle spin cluster, Ising model on squared lattice in magnetic field. The results of quantum calculations are in agreement with the theoretical ones. The method is efficient for estimation of the energy levels of many-spin systems and opens a possibility to achieve quantum supremacy in solving eigenvalue problem with development of multi-qubit quantum computers.
Keywords
Cite
@article{arxiv.2109.11400,
title = {Detection of energy levels of a spin system on a quantum computer by probe spin evolution},
author = {Kh. P. Gnatenko and H. P. Laba and V. M. Tkachuk},
journal= {arXiv preprint arXiv:2109.11400},
year = {2023}
}