3 papers
quant-ph2025
Native-oxide-passivated trilayer junctions for superconducting qubits
Pankaj Sethi, Om Prakash, Jukka-Pekka Kaikkonen +15
Superconducting qubits in today's quantum processing units are typically fabricated with angle-evaporated aluminum--aluminum-oxide--aluminum Josephson junctions. However, there is…
quant-ph2024
Equivalence of flexible stripline and coaxial cables for superconducting qubit control and readout pulses
V. Y. Monarkha, S. Simbierowicz, M. Borrelli +11
We report a comparative study on microwave control lines for a transmon qubit using: (i) flexible stripline transmission lines, and (ii) semi-rigid coaxial cables. During each expe…
quant-ph2024
Near-ground state cooling in electromechanics using measurement-based feedback and Josephson parametric amplifier
Ewa Rej, Richa Cutting, Debopam Datta +5
Feedback-based control of nano- and micromechanical resonators can enable the study of macroscopic quantum phenomena and also sensitive force measurements. Here, we demonstrate the…