Continuous Quantum Error Correction with two-qubit Annealing Hamiltonian

ORAL

Abstract

Adiabatic quantum computation (AQC) is expected to be robust against dephasing and control errors. Nevertheless, environmental noise on the qubits can cause transitions out of the ground state. Error suppression and correction techniques are needed to remedy this. Using an open quantum system approach, we study the effects of different noise models such as bit-flip errors and more realistic thermal noise on a two-qubit system evolving under an annealing Hamiltonian. By encoding each logical qubit using stabilizer codes, we develop a continuous error correction scheme based on the weakly measured error syndromes and analyze the efficiency of this protocol with different physical parameters. We compare the effectiveness of such error correction with known error suppression techniques.

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Presenters

  • Song Zhang

    University of California, Berkeley, Berkeley Quantum Information & Computation Center, University of California, Berkeley

Authors

  • ARMAN BABAKHANI

    Berkeley Quantum Information & Computation Center, University of California, Berkeley

  • Herman Chan

    Berkeley Quantum Information & Computation Center, University of California, Berkeley

  • Jeffrey Epstein

    Physics, Univ of California - Berkeley, Berkeley Quantum Information & Computation Center, University of California, Berkeley, Physics, University of California, Berkeley, University of California, Berkeley

  • Song Zhang

    University of California, Berkeley, Berkeley Quantum Information & Computation Center, University of California, Berkeley

  • Juan Atalaya

    University of California, Berkeley, Univ of California - Berkeley, Berkeley Quantum Information & Computation Center, University of California, Berkeley

  • Birgitta K Whaley

    University of California, Berkeley, Berkeley Quantum Information & Computation Center, University of California, Berkeley, Univ of California - Berkeley