Magnetic vortex generator with a vortex pool and single vortex transfer

摘要

For storing digital data e.g. in magnetic vortex shift registers, a single flux quantum vortex is injected into a superconductive layer by a vortex generator consisting of an emitter and a transfer station. The emitter generates a pool of vortices. The transfer station upon a signal transfers one single vortex at the time. In a particular embodiment, the transfer station consists of a Josephson interferometer at the entrance of a transfer channel. Switching of the interferometer passes a flux vortex from a vortex pool to a shifting and storage apparatus. Other embodiments do not use interferometers but include transfer channels with separation corners and vortex spacing means which insure that upon application of appropriate signals one and only one vortex is passed from the vortex pool to the shifting and storage means.