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Track and hold circuit with continuously suppressed Josephson effect
Track and hold circuit with continuously suppressed Josephson effect
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机译:持续抑制约瑟夫森效应的跟踪和保持电路
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摘要
A track and hold circuit for use with an analog signal quantizer, comprising a multiple of four superconductor-insulator- superconductor (SIS) junctions arranged in a bridge. A storage inductance is connected to opposite nodes of the bridge, with an analog signal input being orthogonally injected into the bridge. The SIS junctions are magnetically suppressed from reaching a superconducting, zero-voltage state, limiting switching of the SIS junctions between a subgap voltage, high differential resistive behavior and a low differential resistive behavior exhibited when a gap voltage is attained. Preferably, each SIS junction includes a magnet that suppresses the superconductivity. Alternatively, a control wire may be used to provide a magnetic field to suppress superconductivity.
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