Josephson logic gate device

Details Josephson logic gate device Josephson logic gate device

1980-08-27

1983-02-01

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307245, 307462, 307277, 357 5, H03K 19195, H03K 1792

Patent

active

043717969

ABSTRACT:
A Josephson logic gate device comprises a closed loop of four Josephson junctions, a gate line and a ground line connected to the closed loop at symmetrically opposite points, and a control line connected to the closed loop at the intermediate joint between the gate line and ground line. This logic gate produces a switching function in which the gate current fed to the gate line is steered from the gate to the load by the transition between the zero-voltage state and the voltage state of the device when a control current is supplied into the control line.

REFERENCES:
patent: 4117354 (1978-09-01), Geewala
patent: 4275314 (1981-06-01), Fulton
H. H. Zappe, "Josephson Quantum Interference Computer Devices", IEEE Transactions on Magnetics, vol. MAG--13, No. 1, pp. 41-47, Jan., 1977.
T. R. Gheewala, "Josephson Logic Circuits Based on Nonlinear Current Injection in Interferometer Devices", Applied Physics Letter, vol. 33 (8), pp. 781-783, Oct. 15, 1978.
T. A. Fulton et al., "A Simple High--Performance Current--Switched Josephson Gate", Applied Physics Letter, vol. 34 (10), pp. 709-711, May 15, 1979.

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