Qubit Zoo

Quantum Network Nodes Based on Diamond Qubits with an Efficient Nanophotonic Interface

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Demonstrates a quantum network node using a single SiV⁻ center in a diamond nanophotonic cavity with ~90% of photons collected into the zero-phonon line. Achieves efficient spin-photon entanglement as a building block for quantum repeaters.

Key Results

  • Nanophotonic cavity Purcell enhancement: >100×
  • System detection efficiency: ~85% into ZPL
  • Memory-enhanced quantum communication protocol demonstrated
  • Platform: SiV⁻ in diamond photonic crystal cavity at 100 mK

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