Moat-guarded Josephson devices

摘要: In superconductive circuitry including a superconducting ground plane, magnetic flux trapping moat is provided which surrounds device. The preferably cut through the plane extends along perimeter surrounding device, being continuous except for small regions where there no cut. serve as current carrying portions to link within rest of outside moat. pinning center so that does not enter region located near Josephson circuit, tunnel devices are especially sensitive trapped in and provision around each prevents from moving into areas becoming therein.