Josephson transmission line device

A Josephson transmission line device comprising:

• at least one Josephson transmission line consisting of a pair of superconducting layers and a junction layer disposed between said superconducting layers to constitute a Josephson junction;
• at least one fluxon generating current source connected across the pair of superconducting layers for supplying fluxon generating current to the Josephson transmission line in order to generate fluxons therein;
• at least one resistor element provided inside one of the superconducting layers so as to form a fluxon stopping position in said Josephson transmission line, said fluxon stopping position being adapted to consume the energy of movement of the fluxon traveling along the Josephson transmission line thereby to cause the fluxon to stop at said fluxon stopping position without extinguishing said fluxon;
• at least one fluxon driving current source connected to said at least one fluxon stopping position for driving the fluxons which stop at the fluxon stopping position by the Lorentz force generated between bias current selectively applied to said transmission line and magnetic flux of said fluxons;
• and
• at least one output circuit connected across the pair of superconducting layers for extracting at least apart of the current involved with one or more fluxons present in the Josephson transmission line.

A Josephson transmission line device comprising:

• at least one Josephson transmission line consisting of a pair of superconducting layers and a junction layer disposed between said superconducting layers to constitute a Josephson junction;
• at least one fluxon generating current source connected across the pair of superconducting layers for supplying fluxon generating current to the Josephson transmission line in order to generate fluxons therein;
• resistor elements provided on both of said superconducting layers on the sides thereof opposite from the Josephson junction so as to form a fluxon stopping position in said Josephson transmission line between said resistor elements, said fluxon stopping position being adapted to consume the energy of movement of the fluxon traveling along the Josephson transmission line thereby to cause the fluxon to stop at said fluxon stopping position without extinguishing said fluxon;
• at least one fluxon driving current source connected to said at least one fluxon stopping position for driving the fluxons which stop at the fluxon stopping position by the Lorentz force generated between bias current selectively applied to said transmission line and magnetic flux of said fluxons;
• and
• at least one output circuit connected across the pair of superconducting layers for extracting at least a part of the current involved with one or more fluxons present in the Josephson transmission line.