Large-scale modular quantum-computer architecture with atomic memory and photonic interconnects

Feb 13, 2014
16 pages
Published in:
  • Phys.Rev.A 89 (2014) 2, 022317
  • Published: Feb 13, 2014

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Abstract: (APS)
The practical construction of scalable quantum-computer hardware capable of executing nontrivial quantum algorithms will require the juxtaposition of different types of quantum systems. We analyze a modular ion trap quantum-computer architecture with a hierarchy of interactions that can scale to very large numbers of qubits. Local entangling quantum gates between qubit memories within a single register are accomplished using natural interactions between the qubits, and entanglement between separate registers is completed via a probabilistic photonic interface between qubits in different registers, even over large distances. We show that this architecture can be made fault tolerant, and demonstrate its viability for fault-tolerant execution of modest size quantum circuits.
  • computer: quantum
  • entanglement
  • gate
  • qubit
  • modular
  • ion trap
  • quantum algorithm
  • interface
  • quantum circuit
  • atom