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Researchers have developed a pump-free method called MO-NODE to generate entangled photon pairs at kilohertz rates, significantly reducing thermal noise in quantum transduction. This breakthrough addresses a critical bottleneck for connecting superconducting processors with optical networks by eliminating signal degradation inherent in conventional pumping techniques. The advancement paves the way for more efficient and reliable links between diverse quantum systems without external optical drives.

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Researchers Build Pump-Free Source of Entangled Photon Pairs

Quantum ZeitgeistSeptember 17, 20265 min read

Until now, linking quantum computers relied on techniques introducing unwanted noise that degraded signals during transmission. A new approach bypasses these limitations by generating entangled photon pairs at kilohertz rates without any external optical pumping. This shift promises more efficient connections between superconducting processors and future quantum networks, avoiding signal contamination inherent in conventional methods.

A new method generates entangled pairs of microwaves and optical photons, termed MO-NODE, enabling teleportation-based quantum transduction without associated thermal noise or signal degradation. This scheme utilises either a spin or atomic system coupled to resonant cavities to create these Bell pairs; it functions across diverse physical systems including colour centres, atomic ensembles, and phonon-mediated arrangements. The technique simplifies creating entangled pairs of photons, essential for transferring data between processors within a quantum computer network. By eliminating pumping requirements, the team enabled more strong devices…

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