Voltage tunable superconducting qubit based on Sn-InAs nanowire Josephson junction
ORAL
Abstract
Hybrid superconductor-semiconductor Josephson junctions offer an attractive alternative to conventional oxide-based superconducting tunnel junctions for use in superconducting qubits, as they provide electrostatic gate control over both the operating frequency and anharmonicity. Recently, Sn-based hybrid Josephson junctions have demonstrated a larger induced superconducting gap and better magnetic field resilience compared to Aluminum-based hybrid unctions. In this work, we utilize Sn-InAs nanowire Josephson junctions to create gate-tunable transmon qubit. We show qubit frequency tunability over a frequency range of more than 4 GHz and strong coupling of the qubit and cavity. With time domain measurements we demonstrate Rabi oscillations and report qubit relaxation times upto T1 ~26 μs and dephasing time upto T2*~1.3 μs.
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Presenters
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Shreyas Asodekar
University of Pittsburgh
Authors
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Amrita Purkayastha
University of Pittsburgh
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Amritesh Sharma
University of Pittsburgh
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Param Jitendra Patel
University of Pittsburgh, Yale University
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Shreyas Asodekar
University of Pittsburgh
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An-Hsi Chen
Oak Ridge National Laboratory
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Connor P Dempsey
University of California, Santa Barbara
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Mihir Pendharkar
Stanford Institute for Materials & Energy Sciences, Stanford University, Stanford University
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Subhayan Sinha
University of Pittsburgh
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Maxime Tomasian
University of Paris-Saclay, Institut Néel CNRS
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Moïra Hocevar
Institut Néel CNRS, Institut Néel, CNRS
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Chris J Palmstrom
University of California, Santa Barbara, University of California Santa Barbara
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Kun Zuo
University of Sydney
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Michael Hatridge
Yale University, University of Pittsburgh
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Sergey Frolov
University of Pittsburgh