7 papers
Flip-chip integrated superconducting qubits using electroplated bump bonds
Yen-An Shih, Rebecca Gharibaan, Barka Khan +9
Flip-chip integration offers a promising route toward scalable superconducting quantum processors and hybrid semiconductor-superconductor quantum devices. We develop a three-dimens…
Experimental Characterization and Modeling of Measurement-Induced State-Transitions in a Fluxonium Superconducting Qubit
Martijn F. S. Zwanenburg, Jinlun Hu, Eugene Y. Huang +3
Superconducting qubits are most often measured using dispersive readout, which, ideally, implements a projective quantum non-demolition (QND) measurement. While a larger readout dr…
Coherence limitations of a Fourier-engineered transmon qubit
Nataliia K. Zhurbina, Siddharth Singh, Lukas J. Splitthoff +4
Intrinsically protected superconducting qubits are a promising route toward enhancing coherence times and advancing hardware towards applications in quantum computing. The $\cos(2Ï…
Exploration of Fluxonium Parameters for Capacitive Cross-Resonance Gates
Eugene Y. Huang, Christian Kraglund Andersen
We study the cross-resonance effect in capacitively-coupled fluxonium qubits and devise a simple formula for their maximum ZX interaction strength. By going beyond the perturbative…
Fast microwave-driven two-qubit gates between fluxonium qubits with a transmon coupler
Siddharth Singh, Eugene Y. Huang, Jinlun Hu +6
Two qubit gates constitute fundamental building blocks in the realization of large-scale quantum devices. Using superconducting circuits, two-qubit gates have previously been imple…
Single-Qubit Gates Beyond the Rotating-Wave Approximation for Strongly Anharmonic Low-Frequency Qubits
Martijn F. S. Zwanenburg, Siddharth Singh, Eugene Y. Huang +5
Single-qubit gates are in many quantum platforms applied using a linear drive resonant with the qubit transition frequency which is often theoretically described within the rotatin…