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Breakthrough Quantum Device Achieves 98.3% Photon Pairing Efficiency

3/8/2026

Summary

Story summary

The Beijing Academy of Quantum Information Sciences, led by Yuan Zhiliang, developed a device that generates photon pairs with high purity and efficiency.
The device overcomes the challenge of traditional quantum dots, which emit two photons simultaneously.
Under pulsed excitation, the team achieved 98.3% pairing efficiency and 29.9% generation efficiency.
The breakthrough was published in Nature Materials.
International experts, including Ding Fei of Leibniz University, praised the results.

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Story summary

The Beijing Academy of Quantum Information Sciences, led by Yuan Zhiliang, developed a device that generates photon pairs with high purity and efficiency.
The device overcomes the challenge of traditional quantum dots, which emit two photons simultaneously.
Under pulsed excitation, the team achieved 98.3% pairing efficiency and 29.9% generation efficiency.
The breakthrough was published in Nature Materials.
International experts, including Ding Fei of Leibniz University, praised the results.