• Corpus ID: 251402798

Experimental verification of the treatment of time-dependent flux in circuit quantization

@inproceedings{Bryon2022ExperimentalVO,
  title={Experimental verification of the treatment of time-dependent flux in circuit quantization},
  author={Jacob Bryon and Daniel Weiss and Xinyuan You and Sara Sussman and Xanthe Croot and Ziwen Huang and Jens Koch and Andrew A. Houck},
  year={2022}
}
Recent theoretical work has highlighted that quantizing a superconducting circuit in the presence of time-dependent flux Φ( t ) generally produces Hamiltonian terms proportional to d Φ /dt 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¨ıve omission of the d Φ /dt term leads to theoretical predictions inconsistent with experimental… 

Fast Flux Entangling Gate for Fluxonium Circuits

We analyze a high-fidelity two-qubit gate using fast flux pulses on superconducting fluxonium qubits. The gate is realized by temporarily detuning magnetic flux through fluxonium loop away from the half

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