Title :
Superconducting implementation of neural networks using fluxon pulses
Author :
Mizugaki, Y. ; Nakajima, H. ; Sawada, Y. ; Yamashita, T.
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
3/1/1993 12:00:00 AM
Abstract :
The authors fabricated neural-based superconducting integrated circuits by using Nb/AlO/sub x//Nb Josephson junctions, and demonstrated the operation of a 2-b neural-based A/D converter. Fluxon pulses were used as neural impulses, and a Josephson junction was used as a threshold element. The conductance values of resistors by which Josephson transmission lines are connected represent fixed synaptic strengths. The preliminary experimental result suggests that variable critical currents of DC-SQUIDs (superconducting quantum interference devices) may provide synapses with variable strength.<>
Keywords :
Josephson effect; SQUIDs; analogue-digital conversion; critical currents; neural chips; superconducting integrated circuits; superconducting junction devices; A/D converter; DC-SQUIDs; Josephson junctions; Josephson transmission lines; Nb-AlO/sub x/-Nb; fluxon pulses; neural based ADC; neural impulses; neural networks; superconducting integrated circuits; superconducting quantum interference devices; synaptic strengths; threshold element; variable critical currents; Critical current; Interference; Josephson junctions; Neural networks; Niobium; Resistors; SQUIDs; Superconducting devices; Superconducting integrated circuits; Superconducting transmission lines;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
