Title :
Passive Phase Shifter for Superconducting Josephson Circuits
Author :
Balashov, D. ; Dimov, B. ; Khabipov, M. ; Ortlepp, T. ; Hagedorn, D. ; Zorin, A.B. ; Buchholz, F.-I. ; Uhlmann, F.H. ; Niemeyer, J.
Author_Institution :
Physikalisch-Tech. Bundesanstalt, Braunschweig
fDate :
6/1/2007 12:00:00 AM
Abstract :
Quantized values of magnetic flux trapped in a superconducting loop enable a new type of passive phase shifting elements. These elements can be incorporated into digital Josephson circuits making their design compact. We have proven the functionality of such phase shifters fabricated in conventional Nb/Al trilayer technology. We report on the successful low speed operation of a rapid single flux quantum toggle flip-flop circuit with the integrated passive pi-phase shifting element.
Keywords :
flip-flops; integrated circuit design; integrated logic circuits; logic design; magnetic flux; passive networks; phase shifters; superconducting logic circuits; digital circuit design; integrated passive pi-phase shifting element; magnetic flux; passive phase shifter; single flux quantum toggle flip-flop circuit; superconducting Josephson circuits; superconducting loop; trilayer technology; CMOS logic circuits; Critical current; Flip-flops; Josephson junctions; Magnetic flux; Niobium; Phase shifters; Superconducting device noise; Superconducting integrated circuits; Superconducting logic circuits; Flux quantum; Josephson phase shift; rapid single flux quantum electronics; superconducting integrated circuits;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.897382
