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Improving quantum control of the soft 0-pi qubit through device engineering

ORAL

Abstract

Ideally, 0-Pi qubit is fully protected against both depolarization and dephasing noise. However, realizing it is a difficult task because of the strict device-fabrication constraints. Therefore, soft 0-Pi qubit has been introduced as an alternative, which is achievable with current technology at the expense of weaker flux-noise protection. However, implementing fast qubit control while avoiding leakage is one of the big challenges that soft 0-Pi qubit faces. In this talk, we explore the parameter space of the soft 0-Pi qubit to maximize coherence and gate speed through low-lying Raman transitions. Moreover, we discuss fabrication constraints and technological considerations that could help push the qubit's design beyond the soft 0-Pi qubit.

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Presenters

  • Junyoung An

    Massachusetts Institute of Technology MI, Massachusetts Institute of Technology MIT

Authors

  • Junyoung An

    Massachusetts Institute of Technology MI, Massachusetts Institute of Technology MIT

  • Agustin Di Paolo

    Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA, Universite de Sherbrooke, MIT, Massachusetts Institute of Technology MIT, Research Laboratory of Electronics, Massachusetts Institute of Technology, Massachusetts Institute of Technology

  • Roni Winik

    Massachusetts Institute of Technology MIT

  • Leon Ding

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology MI

  • Kyle Serniak

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Thomas M Hazard

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Terry P Orlando

    Massachusetts Institute of Technology MIT

  • Simon Gustavsson

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology

  • William D Oliver

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology Research Laboratory of Electronics, MIT Lincoln Laboratory and Department of Electrical Engineering & Computer Science and Department of Physics, Massachusetts Institute of Technology