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Breakthrough Quantum Sensor Enhances Long-Distance Measurements

9/15/2025

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Summary

Story summary

Researchers created a quantum sensing platform with boron vacancies in hexagonal boron nitride, achieving 80 microseconds coherence time and nanotesla-level sensitivity.
A new measurement protocol improved sensitivity by 30% for dynamic signals by addressing back-action noise.
Harvard's team measured weak light signals over a 1.55 km fiber optic link using quantum entanglement, enhancing optical sensitivity.
The research achieved kilometer-scale interferometry with quantum memories, improving the signal-to-noise ratio for long-distance measurements.
These advancements impact materials science, biology, and quantum networking technologies.

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Story summary

Researchers created a quantum sensing platform with boron vacancies in hexagonal boron nitride, achieving 80 microseconds coherence time and nanotesla-level sensitivity.
A new measurement protocol improved sensitivity by 30% for dynamic signals by addressing back-action noise.
Harvard's team measured weak light signals over a 1.55 km fiber optic link using quantum entanglement, enhancing optical sensitivity.
The research achieved kilometer-scale interferometry with quantum memories, improving the signal-to-noise ratio for long-distance measurements.
These advancements impact materials science, biology, and quantum networking technologies.