# 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…

## One Citation

### Fast Flux Entangling Gate for Fluxonium Circuits

- PhysicsPhysical Review Applied
- 2022

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…

## References

SHOWING 1-10 OF 13 REFERENCES

### Review of Scientific Instruments 93

- 044709
- 2022

### Fast high-fidelity gates for galvanically-coupled fluxonium qubits using strong flux modulation

- Education, Physics
- 2022

Long coherence times, large anharmonicity and robust charge-noise insensitivity render ﬂuxonium qubits an interesting alternative to transmons. Recent experiments have demonstrated record coherence…

### High fidelity two-qubit gates on fluxoniums using a tunable coupler

- Physicsnpj Quantum Information
- 2022

Superconducting fluxonium qubits provide a promising alternative to transmons on the path toward large-scale superconductor-based quantum computing due to their better coherence and larger…

### Circuit quantization with time-dependent flux:the parallel-plate SQUID

- Physics
- 2022

Quantum circuit theory has emerged as an essential tool for the study of the dynamics of superconducting circuits. Recently, the problem of accounting for time-dependent driving via external magnetic…

### Fast Flux Entangling Gate for Fluxonium Circuits

- PhysicsPhysical Review Applied
- 2022

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…

### Circuit quantization with time-dependent magnetic fields for realistic geometries

- Physicsnpj Quantum Information
- 2022

Quantum circuit theory has become a powerful and indispensable tool to predict the dynamics of superconducting circuits. Surprisingly however, the question of how to properly account for a…

### I and i

- EducationBMJ : British Medical Journal
- 2001

There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.

### Modern Quantum Mechanics

- Physics
- 1986

1. Fundamental Concepts. 2. Quantum Dynamics. 3. Theory of Angular Momentum. 4. Symmetry in Quantum Mechanics. 5. Approximation Methods. 6. Identical Particles. 7. Scattering Theory. Appendices.…

### PRX Quantum 3

- 1
- 2022