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Breakthrough Method Advances Quantum Networks with Diamond Qubits

3/20/2026

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Summary

Story summary

Humboldt-Universität zu Berlin researchers have developed a method using ultrafast laser pulses to generate single photons in diamond crystals with tin vacancy centers, which act as stable qubits.
The technique preserves the internal quantum spin state, enabling entanglement between distant nodes.
This approach brings quantum networks closer to real-world applications by improving control of quantum states and photon emission.

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Story summary

Humboldt-Universität zu Berlin researchers have developed a method using ultrafast laser pulses to generate single photons in diamond crystals with tin vacancy centers, which act as stable qubits.
The technique preserves the internal quantum spin state, enabling entanglement between distant nodes.
This approach brings quantum networks closer to real-world applications by improving control of quantum states and photon emission.