Unipolar magnetic field pulses as an advantageous tool for ultrafast operations in superconducting Josephson “atoms”
D. V. Popolitova, N. V. Klenov, Igor I. Soloviev, Sergey V. Bakurskiy, Olga V. Tikhonova · Beilstein Journal of Nanotechnology · 2019
A theoretical approach to the consistent full quantum description of the ultrafast population transfer and magnetization reversal in superconducting meta-atoms induced by picosecond unipolar pulses of a magnetic field is developed. A promising scheme based on the regime of stimulated Raman Λ-type transitions between qubit states via upper-lying levels is suggested in order to provide ultrafast quantum operations on the picosecond time scale. The experimental realization of a circuit-on-chip for the discussed ultrafast control is presented.