A Novel Way of Digital Information Processing in the Josephson Junction Circuits Moscow — 1985

 

 

 

Moscow State University
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Moscow State UniversityDEPARTMENT OF PHYSICS

Preprint No. 9/1985

O. A. Mukhanov and V. K. Semenov

A Novel
Way of
Digital
Information
Processing in the
Josephson
Junction
Circuits

Moscow — 1985
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1. All reported Josephson logic systems are
based on two ways of physical representation of the digital
information.In the first way, the information is coded by the magnetic flux
trapped in superconducting loops; presently the single flux quanta
F0=h/2e~2.07x10-15 Wb are used in
most devices1-8. The basic
drawback of this representation is that the magnetic flux suffers
a nonvanishing drop along even a superconducting transmission
lines. As a result, the information coded in this way can be
transferred practically to few neighboring logic cells during a
single clock period. This property is hardly compatible with the
traditional computer architectures7.

……..
Figure 1
Figure 1.		 Figure 1
Figure 2.
Figure 1
Figure 3.
3. Figures 2 and 3 show possible structure the
components of the above circuit (Fig. 1). The buffer stage
(Fig. 2a) is closed to those discussed earlier7; they provide unilateral transfer of
the pulses (1) between the logic gates, with the simultaneous
regeneration of the pulses.

References

  1. T.A. Fulton, R.S. Dynes and P.W. Anderson — Proc. IEEE,
    vol. 61, p. 28, 1973.
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