Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1980-09-29
1982-11-30
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307306, 307463, 307476, 357 5, H03K 1792, H03K 19195
Patent
active
043617689
ABSTRACT:
Josephson solitons are steered along selected paths in response to applied control signals, the output path chosen being dependent solely upon the presence and absence of these control signals. An input Josephson transmission line is provided along which the Josephson soliton travels. This input line intersects with two output Josephson transmission lines. Bias currents of opposite polarity in the output transmission lines are used to steer the soliton into a selected one of the output lines. At the intersection of the input line and the output lines an isolating resistor is located. This resistor dissipates the anti-soliton created at the intersection and provides isolation between the input and the output of the device. In a preferred embodiment, one electrode of the input and output Josephson transmission lines can be comprised of a common superconductor and the isolating resistor can be located between the other electrodes of the output transmission line. Path selection is determined solely by the control signal, and is not dependent upon internal damping of the device or the choice of boundary conditions at the intersections.
REFERENCES:
patent: 3936677 (1976-02-01), Fulton et al.
K. Nakajima et al., "Logic Design of Josephson Network", Journal of Applied Physics, vol. 47, No. 4, Apr. 1976, pp. 1620-1627.
T. A. Fulton et al., "Experimental Flux Shuttle", Appl. Phys. Lett., vol. 22, No. 5, Mar. 1, 1972, pp. 232-233.
T. A. Fulton et al., "The Flux Shuttle-A Josephson Junction Shift Register Employing Single Flux Quanta", Proc. of IEEE 61, pp. 28-35, 1973.
J. Rubinstein, "Sine-Gordon Equation", Journal of Mathematical Physics, vol. 11, No. 1, Jan. 1970, pp. 258-266.
A. C. Scott, "Propagation of Magnetic Flux on a Long Josephson Tunnel Junction", Il Nuovo Cimento, vol. 69B, No. 2, 1970, pp. 241-260.
T. A. Fulton et al., "Single Vortex Propagation in Josephson Tunnel Junctions", Solid State Communications, vol. 12, pp. 57-61, 1973.
T. V. Rajeevakumar et al., "Observation of Nonresonant Vortex Motion in a Long Josephson Tunnel Junction", Physical Review B, vol. 21, No. 1, pp. 5432-5437, Jun. 1, 1980.
International Business Machines - Corporation
Stanland Jackson E.
Zazworsky John
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