Foundational survey that crystallized the five core criteria for a physical quantum computer, plus two additional criteria for quantum communication. It turned a scattered set of hardware desiderata into the common scorecard still used across qubit platforms.

Key Results

  • Formalizes the five criteria for quantum computation: scalable qubits, initialization, long coherence, universal gates, and qubit-specific measurement
  • Adds two communication criteria: stationary-to-flying qubit conversion and faithful transmission
  • Compares multiple hardware routes, including atoms, spins, superconducting circuits, and magnetic-resonance platforms, under one physical framework