A transmon based five-qutrit processor for simulations in high energy physics

ORAL

Abstract

Encoding quantum information in the higher energy levels of the transmon circuit provides a hardware efficient way to harness a larger Hilbert space in existing quantum processors while also increasing their connectivity. Furthermore, a network of qutrits (three-level systems) is naturally suited to experimentally demonstrate recently identified connections between high energy physics and quantum information, such as holographic quantum error correction codes and the physics of scrambling. Here we report on the control of a five-qutrit processor and our progress toward characterizing the scrambling of quantum information. We implement a circuit to measure the decay of out-of-time ordered correlators, a hallmark of scrambling, in a method that distinguishes between decoherence and scrambling. The same circuit can be viewed as a teleportation protocol where quantum information is scrambled by a black hole and then decoded through measurement of emitted Hawking photons.

–

Presenters

  • Machiel Blok

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

Authors

  • Machiel Blok

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

  • Vinay Ramasesh

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

  • Dar Dahlen

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

  • Kevin P. O'Brien

    Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Electrical Engineering and Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA, University of California, Berkeley

  • John Mark Kreikebaum

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

  • Norman Yao

    University of California, Berkeley, Department of Physics, University of California, Berkeley, California 94720, USA, Physics, University of California, Berkeley, Department of Physics, University of California, Berkeley, University of California, Berkeley and Lawrence Berkeley National Laboratory, Materials Sciences Division

  • Irfan Siddiqi

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