Characterization of the Cross Resonance Effect for Superconducting Transmon Qutrits

ORAL

Abstract

A qutrit architecture proposes several resource-efficiency related advantages over qubit processors, but still lacks reliable high-fidelity entanglement gates. Currently, one of the foremost mechanisms for qubit entangling gates is the cross resonance effect, which has enabled high-fidelity quantum computation. The cross resonance interaction can be described by an effective Hamiltonian, which has been thoroughly studied for qubit systems. However, such characterization is still missing for qutrit systems. In this work, we experimentally characterize the cross resonance effect between two fixed frequency transmons from a qutrit perspective.This work is a step towards engineering high-fidelity two-qutrit entangling gates.

*This work was supported by the Office of Advanced Scientific Computing Research, Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

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Authors

  • Merrell Brzeczek

    • University of California, Berkeley

  • Alexis Morvan

    • Lawrence Berkeley National Laboratory

  • Ravi Naik

    • University of California, Berkeley

  • Bradley Mitchell

    • University of California, Berkeley

  • David Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • Lawrence Berkeley National Laboratory