2021/04/14 by Ilya N. Moskalenko, I. N. Moskalenko, Ilya S. Besedin +4 · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #Biology #Condensed matter physics #Fluxon #Josephson effect #Macroscopic quantum phenomena #Physics #Pi Josephson junction #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum optics and atomic interactions #Quantum tunnelling #Squid #Superconductivity #cond-mat.supr-con #quant-ph
paper · pdf · doi:10.1103/physrevb.103.224528
published in Physical review. B./Physical review. B 103(22) (American Physical Society) · 11 pages, 12 figures
arxiv created 2021/04/14 · openalex publication_date 2021/06/25 · arxiv updated 2021/06/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report a detailed theoretical study of a coherent macroscopic quantum-mechanical phenomenon---quantum beats of a single magnetic fluxon trapped in a two-cell SQUID of high kinetic inductance. We calculate numerically and analytically the low-lying energy levels of the fluxon and explore their dependence on externally applied magnetic fields. The quantum dynamics of the fluxon shows quantum beats originating from its coherent quantum tunneling between the SQUID cells. We analyze the experimental setup based on a three-cell SQUID, allowing for time-resolved measurements of quantum beats of the fluxon.