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New Coating Boosts Quantum Light Source Reliability by 87%

10/7/2025

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Summary

Story summary

Researchers at Northwestern University developed a coating method applying PTCDA to tungsten diselenide to improve quantum light-source reliability.
The coating increases photon spectral purity by 87% and stabilizes color shifts.
It shields single-photon emitters from atmospheric contaminants, aiding quantum communication.
Led by Mark C. Hersam, the team plans to test other semiconductors and coatings to enable a quantum internet.

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Story summary

Researchers at Northwestern University developed a coating method applying PTCDA to tungsten diselenide to improve quantum light-source reliability.
The coating increases photon spectral purity by 87% and stabilizes color shifts.
It shields single-photon emitters from atmospheric contaminants, aiding quantum communication.
Led by Mark C. Hersam, the team plans to test other semiconductors and coatings to enable a quantum internet.