Quantum beats of a magnetic fluxon in a two-cell SQUID
Quantum beats of a magnetic fluxon in a two-cell SQUID
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. …