Superconducting system, superconducting circuit chip, and high-temperature superconducting junction device with a shunt resistor
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United States of America Patent
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Jul 11, 2006
Grant Date -
Nov 11, 2004
app pub date -
Mar 8, 2004
filing date -
Mar 11, 2003
priority date (Note) -
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Abstract
A superconducting system that includes an interface circuit capable of making the best use of a high-speed superconducting circuit and a high-speed semiconductor circuit. A multi-chip module in which an Nb superconducting circuit having josephson junctions formed by the use of Nb and an oxide high-temperature superconducting latch interface circuit having josephson junctions formed by the use of an oxide high-temperature superconductor are connected is located in a low temperature environment kept at 4.2 K. The oxide high-temperature superconducting latch interface circuit is connected to a high-speed semiconductor amplifier and a signal outputted from the Nb superconducting circuit is transmitted to the high-speed semiconductor amplifier. As a result, the limit of the operation speed of the oxide high-temperature superconducting latch interface circuit is raised and the superconducting system including the interface circuit capable of making the best use of both the high-speed Nb superconducting circuit and the high-speed semiconductor amplifier is realized.
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