| 摘要 |
<p>A Josephson tunnelling device with means for producing magnetic fields which intercept the device. These fields establish screening currents in the device. The field producing means includes means for establishing a substantially 1:1 distribution of gate current through the device and the screening current. A particular embodiment is a Josephson logic gate having multiple control lines shaped to insure that current in each control line has the same effect on the junction as current in every other control line. Superconducting layers forming a Josephson tunnel device are sufficiently long to allow the gate currents and screening currents to spread evenly across the width of the Josephson junction.</p> |
