摘要: Recent progress in Josephson digital logic circuits is described. It noted that changing the junction material from a lead alloy to niobium has dramatically improved process reliability, and high-speed, low-power operations have been demonstrated at large-scale integrated-circuit levels. The first microprocessor, operated 770 MHz, verified potential of devices for future elements. possibilities ultrafast computer, previously shelved because number problems, are being actively reconsidered. performance anticipated using high-temperature superconducting materials also discussed. >
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