β Scribed by T.D. Clark; J. Diggins; J.F. Ralph; M. Everitt; R.J. Prance; H. Prance; R. Whiteman; A. Widom; Y.N. Srivastava
No coin nor oath required. For personal study only.
Using a quantum mechanical model for a frictionless superconducting quantum interference device ring subjected to a time varying external magnetic flux we solve the time-dependent Schro dinger equation for the ring and calculate the time-averaged energy and screening current expectation values. We demonstrate by computation that (subject to constraints on the applied field frequency and amplitude) the ring can be treated as a two level system. We also show that for certain regions of the bias flux, the time-averaged energy expectation value appears to jump between the time-averaged energies of the adiabatic ground and first excited states of the ring.
π SIMILAR VOLUMES
We present an exact numerical calculation of the spin phase diagram of a two-electron quantum ring as a function of an applied inplane electric field E and a perpendicular magnetic field B. In general, large E and B favour, respectively, singlet and triplet states. At low fields, however, the spin p
A master equation for population in a two-level system interacted with bosons in a timedependent electric field is derived in a noninteracting-blip approximation. For a \(\mathrm{cw}\) field the asymptotic solution of this equation is determined to all orders of the perturbation expansion with respe