research
One Atom Let Quantum Links Wait for Light
A proposed memory-assisted link avoids requiring photons from two processors to arrive together.
Summary
A proposed memory-assisted link avoids requiring photons from two processors to arrive together.
A single atom in a high-finesse cavity acts as a temporary quantum memory between two processor links. The proposed protocol entangles the atom with a photon from one processor, waits for a photon from the second, then reads out the atom to entangle the processors. In the authors’ rate model, avoiding simultaneous photon arrival changes a quadratic photon-delivery penalty to approximately linear scaling over a broad range; the photons also need not be indistinguishable. These are theoretical rate estimates under modeled decoherence, not a deployed quantum network.
Why it matters
A proposed memory-assisted link avoids requiring photons from two processors to arrive together.
Limits and context
- In the authors’ rate model, avoiding simultaneous photon arrival changes a quadratic photon-delivery penalty to approximately linear scaling over a broad range; the photons also need not be indistinguishable.
- These are theoretical rate estimates under modeled decoherence, not a deployed quantum network.
Key claims
A proposed memory-assisted link avoids requiring photons from two processors to arrive together.
Qualification: In the authors’ rate model, avoiding simultaneous photon arrival changes a quadratic photon-delivery penalty to approximately linear scaling over a broad range; the photons also need not be indistinguishable.
Evidence: source-2026-09-21-006
Sources
- arXiv preprint 2609.21961arXiv · primary research
Corrections
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