Grid states for encoding and stabilizing a logical qubit in superconducting circuits (Part 2)

ORAL

Abstract

Protecting quantum information requires encoding a quantum bit of information into a space with a large number of dimensions. To this end, Gottesman Kitaev and Preskill (GKP) proposed to use a single harmonic oscillator as an alternative to an ensemble of many two-level systems. In this scheme, the information is encoded in grid states of the oscillator. The dispersive interaction between the oscillator and an ancillary two-level system is sufficient to create and stabilize these non-local states, provided that the interaction strength is periodically modulated in time. In this talk, I will show how to engineer such a modulated interaction and I will present our experimental progress towards the creation and stabilization of GKP grid states.

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Presenters

  • Steven Touzard

    Yale Univ, Applied Physics, Yale University

Authors

  • Steven Touzard

    Yale Univ, Applied Physics, Yale University

  • Alec Eickbusch

    Yale Univ

  • Phillipe Campagne-Ibarcq

    Yale Univ, Applied Physics, Yale University

  • Evan Zalys-Geller

    Yale Univ

  • Nicholas Frattini

    Yale Univ, Applied Physics, Yale University

  • Volodymyr Sivak

    Yale Univ

  • Shruti Puri

    Yale Univ, Department of Applied Physics, Yale University, Applied Physics, Yale University

  • Mazyar Mirrahimi

    Yale Univ, Quantic Team, INRIA Paris, QUANTIC, INRIA Paris, QUANTIC, INRIA, Paris; YQI, Yale University, INRIA Paris and Yale University

  • Shyam Shankar

    Yale Univ, Applied Physics, Yale University, Department of Applied Physics, Yale University

  • Michel H. Devoret

    Yale Univ, Applied Physics, Yale University, Department of Applied Physics, Yale University, Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA