Title :
Analysis of the threshold characteristics of the uniform Josephson flux shuttle
Author_Institution :
Hewlett Packard Lab., Palo Alto, CA, USA
Abstract :
A general method for calculating the mode boundaries of a uniform flux shuttle and numerical techniques for computing these thresholds are presented. A number of examples of practical interest are given, including the current distribution in a shuttle due to a single vortex, and static margins of directly injected two-phase shift registers and magnetically clocked three-phase shift registers. Comparison with dynamic circuit simulations shows that the static thresholds are good approximations over a wide range of junction parameters.<>
Keywords :
SQUIDs; equivalent circuits; network analysis; numerical methods; shift registers; superconducting logic circuits; current distribution; dynamic circuit simulations; equivalent circuits; junction parameters; magnetically clocked three-phase shift registers; mode boundaries; multijunction SQUID; numerical techniques; static margins; threshold characteristics analysis; two-phase shift registers; uniform Josephson flux shuttle; Boundary conditions; Equations; High temperature superconductors; Hysteresis; Inductance; Inductors; Interference; Magnetic circuits; Quantization; SQUIDs;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
