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by Ciro Santilli (@cirosantilli, 37)

Superconducting quantum computer need non-linear components

 ... Information Quantum information Quantum computing Quantum computing hardware Quantum computer physical implementation Superconducting quantum computing
 0 By others on same topic  0 Discussions  Updated 2025-05-13  +Created 1970-01-01  See my version
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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