Detection of energy levels of a spin system on a quantum computer by probe spin evolution Kh. P. Gnatenko, H. P. Laba and V. M. Tkachuk Eur. Phys. J. Plus, 137 4 (2022) 522 Published online: 30 April 2022 DOI: 10.1140/epjp/s13360-022-02753-0