Innovation
China Achieves 98% Purity in Quantum Photon Pair Source
Chinese researchers developed a quantum dot device that emits photon pairs with 98.3% purity, one of the highest ever achieved in a solid-state system, advancing quantum networking.
Key Takeaways
- Device achieves 98.3% photon pair purity using a dark-state quantum pathway
- Pair-generation efficiency reached 29.9%, among the best for solid-state systems
- Currently requires near-absolute-zero temperatures with plans to push toward practical operating ranges
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DT Editorial AI··via interestingengineering.com