Fluxoid type superconducting logic element

Details Fluxoid type superconducting logic element Fluxoid type superconducting logic element

1984-01-17

1986-01-28

Pellinen, A. D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Magnetic switching circuits

307306, H03K 338, H03K 19195

Patent

active

045673837

ABSTRACT:
A fluxoid type superconducting logic element essentially comprises a single main superconductor loop and a switching element connected across the main superconductor loop. When the switching element is open, a permanent current flows in the main superconductor loop of the logic element at a cryogenic temperature, thereby sustaining a half-odd integer multiple of magnetic flux unit in each half of said main loop. When a small amount of input magnetic flux is applied to one half of the main loop and the switch is closed, the distribution of the magnetic flux varies according to the quantum theory to allow an integer multiple of magnetic flux to occupy each separated domain of the main loop. These two different magnetic flux distributions can be used to represent a binary state.

REFERENCES:
patent: 3863078 (1975-01-01), Zappe
patent: 3983546 (1976-09-01), Zappe
patent: 4176290 (1979-11-01), Ishida et al.
patent: 4348710 (1982-09-01), Woods
patent: 4392148 (1983-07-01), Chang et al.
patent: 4482821 (1984-11-01), Houkawa et al.
Dynamics of Some Single Flux Quantum Devices: I. Parametric Quantron by Likharev, IEEE Trans. on Magnetics, vol. MAG-13, No. 3, 1-1977.
Dynamics of Some Single Flux Quantum Devices: II. Inhomogeneous Flux Shuttle by Likharev, IEEE Trans. of Magnetics, vol. MAG-13, No. 1, 1-1977.

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