9NOSIS · the press
The slow noise falls through the sieve
The slow noise falls through the sieve
A small computational Josephson junction is shunted by a "superinductor" (an array of larger junctions). The massive inductance acts as an impenetrable wall to the high-frequency microwave signals of the qubit states, trapping them where they belong. But for the slow, low-frequency charge noise, the superinductor acts as a short circuit, draining it harmlessly to ground.
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