Implementation and Applications of Two Qutrit Gates in Superconducting Transmon Qubits

ORAL

Abstract

With recent improvements in state-selective quantum control and the coherent lifetimes of superconducting circuits, it has become feasible to encode quantum information in the higher excited states of a transmon qubit. A three-level quantum system (qutrit) has an exponentially larger Hilbert space for a given number of elements and is the minimal system required to observe non-contextuality and the physics of scrambling. Here we describe the implementation of a gate between two transmon qutrits in a 2D planar architecture. The gate is constructed by incorporating the well-established cross-resonance interaction into a multi-level decoupling sequence. In combination with single qutrit control, this gate allows for the implementation of a maximally scrambling operation which is a key component in a recently proposed proof-of-principle experiment to simulate the decoding of Hawking radiation to reconstruct a quantum state.

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Presenters

  • Machiel Blok

    Univ of California – Berkeley, Univ of California - Berkeley, Physics, Univ of California - Berkeley

Authors

  • Machiel Blok

    Univ of California – Berkeley, Univ of California - Berkeley, Physics, Univ of California - Berkeley

  • Vinay Ramasesh

    Department of Physics, University of California Berkeley, Univ of California – Berkeley, Univ of California - Berkeley, Physics, Univ of California - Berkeley

  • James Colless

    Department of Physics, University of California, Berkeley, Univ of California - Berkeley, Physics, Univ of California - Berkeley

  • Kevin O'Brien

    Univ of California – Berkeley, Univ of California - Berkeley, University of California - Berkeley, Physics, Univ of California - Berkeley

  • Thomas Schuster

    Univ of California - Berkeley, Physics, Univ of California - Berkeley

  • Norman Yao

    Physics, Univ of California - Berkeley, Department of Physics, University of California, University of California, Berkeley, Univ of California - Berkeley, University of California Berkeley, Physics, University of California, Berkeley, Department of Physics, Univ of California - Berkeley

  • Irfan Siddiqi

    Univ of California - Berkeley, Department of Physics, University of California Berkeley, Department of Physics, University of California, Berkeley, University of California Berkeley, Univ of California – Berkeley, Physics, Univ of California -- Berkeley, Physics, Univ of California - Berkeley, University of California - Berkeley