Superconducting quantum computer need non-linear components
ID: superconducting-quantum-computer-need-non-linear-components
Superconducting quantum computer need non-linear components by
Ciro Santilli 35 Updated 2025-02-26 +Created 1970-01-01
Non-linearity is needed otherwise the input energy would just make the state go to higher and higher energy levels, e.g. from 1 to 2. But we only want to use levels 0 and 1.
The way this is modelled in by starting from a pure LC circuit, which is an harmonic oscillator, see also quantum LC circuit, and then replacing the linear inductor with a SQUID device, e.g. mentioned at: youtu.be/eZJjQGu85Ps?t=1655 Video "Superconducting Qubits I Part 1 by Zlatko Minev (2020)".
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