High-fidelity parallel entangling gates on a neutral-atom quantum computer

Abstract The ability to perform entangling quantum operations with low error rates in a scalable fashion is a central element of useful quantum information processing 1 . Neutral-atom arrays have recently emerged as a promising quantum computing platform, featuring coherent control over hundreds of qubits 2,3 and any-to-any gate connectivity in a flexible, dynamically reconfigurable architecture 4 . The main outstanding challenge has been to reduce errors in entangling operations mediated through Rydberg interactions 5 . Here we report the realization of two-qubit entangling gates with 99.5% fidelity on up to 60 atoms in parallel, surpassing the surface-code threshold for error correction 6,7 . Our method uses…

• NS
  National Science Foundation

  Awards: DGE1745303, W911NF-20-1-0082
• UD
  U.S. Department of Energy

  Awards: DE-SC0021013, DE-SC0021110, 7568717, SC0021110
• DA
  Defense Advanced Research Projects Agency

  Award: W911NF2010021
• ND
  National Defense Science and Engineering Graduate
• MU
  Multidisciplinary University Research Initiative

  Award: W911NF-20-1-0082
• CF
  Center for Ultracold Atoms, Massachusetts Institute of Technology
• AR
  Army Research Office

  Awards: W911NF-20-1-0082, W911NF