Distributed quantum computing across an optical network link

Abstract Distributed quantum computing (DQC) combines the computing power of multiple networked quantum processing modules, ideally enabling the execution of large quantum circuits without compromising performance or qubit connectivity 1,2 . Photonic networks are well suited as a versatile and reconfigurable interconnect layer for DQC; remote entanglement shared between matter qubits across the network enables all-to-all logical connectivity through quantum gate teleportation (QGT) 3,4 . For a scalable DQC architecture, the QGT implementation must be deterministic and repeatable; until now, no demonstration has satisfied these requirements. Here we experimentally demonstrate the distribution of quantum…

• EA
  Engineering and Physical Sciences Research Council

  Awards: EP/T001062/1, EP/T001011/1, T001062, EP/T001062/1, EP/W028026/1, EP/W028026/1, EP/T001011/1
• BC
  Balliol College, University of Oxford
• AR
  Army Research Office

  Awards: W911NF-18-1-0340, W911NF
• SN
  Sandia National Laboratories