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by karma_pharmer
741 days ago
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- Superconductors are lossy with AC signals, is this loss not a big problem? In this logic style, data are represented with fluxons. One fluxon is the quantum unit of flux. You can't have "half a fluxon" in a superconducting loop. In that sense it's actually "more digital than" anything in commercial CMOS chips. The circuit can still malfunction of course -- the failure mode looks like a fluxon failing to move from one logic stage to the next. The real worry is that cryocooler though. Cryocoolers that can do liquid helium temperatures have efficiency ratings around 1%, so that 500kW shoebox is going to need an entire cooling tower attached to its refrigerator. |
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