Josephson (junction) Technology Definition/Meaning:
A computing technology based on
superconductivity and electron tunneling between metals. These effects occur at
extremely low temperatures, on the order of 4 K; such temperatures are obtained
by immersing the whole system in liquid helium. Logic circuits and nonvolatile
memories can be made out of the technology, which has the potential for ultrafast
switching speeds and very low power dissipation. This combination of properties offers the potential of extremely fast
computers that can be realized within minimum linear dimensions and that do not
have the heat-transfer problems of VLSI silicon devices. As switching speeds
become measured in picoseconds, system linear dimensions must be reduced
accordingly. (One nanosecond is the order of 10 cm on a transmission line.)
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