Sponsoring Units: DQI,DCMP,DMPChair: Anthony McFadden, University of California, Santa Barbara
Wed. March 6, 10:36 a.m. – 10:48 a.m. CST
200CD
Achieving large-scale quantum computations with superconducting quantum circuits, particularly those based on transmon qubits, demands significant improvements in qubit coherence time. In recent advancements, tantalum (Ta) has emerged as a leading candidate, outperforming traditional counterparts in terms of coherence time. Despite its promise, the presence of an amorphous surface Ta oxide layer poses a challenge, potentially introducing dielectric loss and limiting the coherence time. In this talk, we will present a novel approach for suppressing the formation of surface Ta oxide, aiming to unlock the full potential of Ta-based quantum circuits for high-performance quantum computing applications.
Presented By
Chenyu Zhou (Brookhaven National Laboratory (BNL))
Authors
Chenyu Zhou (Brookhaven National Laboratory (BNL))
Junsik Mun (Brookhaven National Laboratory)
Juntao Yao (Stony Brook University)
Aswin kumar Anbalagan (Brookhaven National Laboratory)
Mohammad D Hossain (Pacific Northwest National Laboratory)
Russell A McLellan (Princeton University)
Ruoshui Li (Brookhaven National Laboratory)
Kim Kisslinger (Brookhaven National Laboratory)
Gengnan Li (Brookhaven National Laboratory)
Xiao Tong (Brookhaven National Laboratory)
Ashley R Head (Brookhaven National Laboratory)
Conan Weiland (National Institute of Standard and Technology)
Steven L Hulbert (Brookhaven National Laboratory)
Andrew L Walter (Brookhaven National Laboratory)
Qiang Li (Stony Brook University (SUNY))
Yimei Zhu (Brookhaven National Laboratory)
Peter V Sushko (Pacific Northwest National Laboratory)
Mingzhao Liu (Brookhaven National Laboratory)
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Controlling Surface Oxidation of Superconducting Circuit Materials
Wed. March 6, 10:36 a.m. – 10:48 a.m. CST
200CD
Achieving large-scale quantum computations with superconducting quantum circuits, particularly those based on transmon qubits, demands significant improvements in qubit coherence time. In recent advancements, tantalum (Ta) has emerged as a leading candidate, outperforming traditional counterparts in terms of coherence time. Despite its promise, the presence of an amorphous surface Ta oxide layer poses a challenge, potentially introducing dielectric loss and limiting the coherence time. In this talk, we will present a novel approach for suppressing the formation of surface Ta oxide, aiming to unlock the full potential of Ta-based quantum circuits for high-performance quantum computing applications.
Presented By
Chenyu Zhou (Brookhaven National Laboratory (BNL))
Authors
Chenyu Zhou (Brookhaven National Laboratory (BNL))
Junsik Mun (Brookhaven National Laboratory)
Juntao Yao (Stony Brook University)
Aswin kumar Anbalagan (Brookhaven National Laboratory)
Mohammad D Hossain (Pacific Northwest National Laboratory)
Russell A McLellan (Princeton University)
Ruoshui Li (Brookhaven National Laboratory)
Kim Kisslinger (Brookhaven National Laboratory)
Gengnan Li (Brookhaven National Laboratory)
Xiao Tong (Brookhaven National Laboratory)
Ashley R Head (Brookhaven National Laboratory)
Conan Weiland (National Institute of Standard and Technology)
Steven L Hulbert (Brookhaven National Laboratory)
Andrew L Walter (Brookhaven National Laboratory)
Qiang Li (Stony Brook University (SUNY))
Yimei Zhu (Brookhaven National Laboratory)
Peter V Sushko (Pacific Northwest National Laboratory)