Materials and Surface Engineering for Scalable Low-Loss Superconducting Quantum Computers

Speaker: Dr. Russ Renzas
Affiliation: Oxford Instruments (formerly Rigetti Quantum Computing)

Via Zoom: https://ucla.zoom.us/j/97981903610?pwd=QkFvR3ovTnI4WjduQnBtNVZNZElzdz09

Abstract: Large-scale superconducting quantum systems require lower-loss materials and processes to achieve large qubit counts with high coherence time. Current conventional superconducting resonators and transmons are often designed with enormous footprints in order to suppress surface participation ratios and circumvent challenging materials issues which create loss at the substrate-metal, metal-air, and substrate-air interfaces. Recent work focused on reducing losses at these interfaces has shown that enormous improvement is possible through the use of better materials and fabrication processes, which will enable both higher coherence times and smaller device footprints. This talk will highlight key recent results in the academic community and discuss future research directions which may yield yet more improvements in performance and scalability.

Biography: Russ specializes in Quantum Technology with the Plasma Technology group at Oxford Instruments. He facilitates collaborations that leverage Oxford Instruments’ process expertise to help our partners carry out world-class research. Russ directed device fabrication at Rigetti Computing from 2016-2018. He has co-authored over 15 peer-reviewed journal articles with over 3000 citations. Russ earned his Ph.D. in Physical Chemistry at UC Berkeley in 2010. He is currently based in Reno, Nevada, where he is also Adjunct Faculty at the University of Nevada, Reno.

Date/Time:
Date(s) - Jul 21, 2021
12:00 pm - 1:00 pm

Location:
Via Zoom Only
No location, Los Angeles
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