3 papers
quant-ph2026
Reducing TLS loss in tantalum CPW resonators using titanium sacrificial layers
Zachary Degnan, Chun-Ching Chiu, Yi-Hsun Chen +5
We demonstrate a substantial reduction in two-level system loss in tantalum coplanar waveguide resonators fabricated on high-resistivity silicon substrates through the use of an ul…
quant-ph2025
Open-Source Highly Parallel Electromagnetic Simulations for Superconducting Circuits
David Sommers, Zach Degnan, Divita Gautam +4
Electromagnetic simulations form an indispensable part of the design and optimization process for superconducting quantum devices. Although several commercial platforms exist, open…
quant-ph2024
Experimental realization of qubit-state-controlled directional edge states in waveguide QED
Prasanna Pakkiam, N. Pradeep Kumar, Chun-Ching Chiu +3
We experimentally realise the theoretical proposal for in-situ tunable photonic edge states emerging from qubits coupled to a waveguide with a photonic bandgap. These edge states a…