21 citations · 40 across the 5 of their papers we have counts for
5 papers
Charge Parity Rates in Transmon Qubits with Different Shunting Capacitors
Yi-Hsiang Huang, Haozhi Wang, Yizhou Huang +3
The presence of non-equilibrium quasiparticles in superconducting resonators and qubits operating at millikelvin temperature has been known for decades. One metric for the number o…
Identification and Mitigation of Conducting Package Losses for Quantum Superconducting Devices
Yizhou Huang, Yi-Hsiang Huang, Haozhi Wang +4
Low-loss superconducting rf devices are required when used for quantum computation. Here, we present a series of measurements and simulations showing that conducting losses in the…
Characterization of Asymmetric Gap-Engineered Josephson Junctions and 3D Transmon Qubits
Zach Steffen, S. K. Dutta, Haozhi Wang +6
We have fabricated and characterized asymmetric gap-engineered junctions and transmon devices. To create Josephson junctions with asymmetric gaps, Ti was used to proximitize and lo…
Hot electron heatsinks for microwave attenuators below 100 mK
Jen-Hao Yeh, Rui Zhang, Shavindra Premaratne +3
We demonstrate improvements to the cooling power of broad bandwidth (10 GHz) microwave attenuators designed for operation at temperatures below 100 mK. By interleaving 9-m thick…
Realizing Topological Transition in a Non-Hermitian Quantum Walk with Circuit QED
Yizhou Huang, Zhang-qi Yin, W. L. Yang
We extend the non-Hermitian one-dimensional quantum walk model [Phys. Rev. Lett. 102, 065703 (2009)] by taking the dephasing effect into account. We prove that the feature of topol…