@article{203856,
  author = {Jacob Bryon and D. K. Weiss and Xinyuan You and Sara Sussman and Xanthe Croot and Ziwen Huang and Jens Koch and Andrew Houck},
  title = {Time-Dependent Magnetic Flux in Devices for Circuit Quantum Electrodynamics},
  abstract = {<p>Recent theoretical work has highlighted that quantizing a superconducting circuit in the presence of time- dependent flux\&nbsp;Φ(t)\&nbsp;generally produces Hamiltonian terms proportional to\&nbsp;dΦ/dt\&nbsp;unless a special allocation of the flux across inductive terms is chosen. Here, we present an experiment probing the effects of a fast flux ramp applied to a heavy-fluxonium circuit. The experiment confirms that na ̈{\i}ve omission of the\&nbsp;dΦ/dt\&nbsp;term leads to theoretical predictions inconsistent with experimental data. Experimental data are fully consistent with recent theory that includes the derivative term or equivalently uses {\textquotedblleft}irrotational variables{\textquotedblright} that uniquely allocate the flux to properly eliminate the\&nbsp;dΦ/dt\&nbsp;term.</p>},
  year = {2023},
  journal = {Physical Review Applied},
  url = {https://journals.aps.org/prapplied/pdf/10.1103/PhysRevApplied.19.034031},
  language = {eng},
}