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Entanglement of nanophotonic quantum memory nodes in a telecom network

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Demonstrates entanglement between two SiV⁻ quantum memory nodes connected by 35 km of deployed Boston-area telecom fiber via quantum frequency conversion. First demonstration of memory-enhanced quantum communication over a metropolitan-scale fiber network.

Key Results

  • Remote entanglement fidelity: 94%
  • Distance: 35 km deployed fiber (Boston)
  • Quantum frequency conversion: 737 nm → 1350 nm telecom band
  • Entanglement rate: ~100 per hour

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