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Study Reveals Quantum Decoherence in Under Two Femtoseconds

4/6/2026

Summary

Story summary

Quantum systems decohere in under two femtoseconds, according to a new study.
Researchers identify high-order harmonic generation (HHG) as a key factor driving this ultrafast decoherence.
They model electron–environment interactions during HHG with a Lindblad master equation framework.
The study shows that superradiance and broadband emission interfere, causing loss of quantum coherence.
The findings are based on simulations; experimental testing is planned, and the work is published in Advanced Science.

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Story summary

Quantum systems decohere in under two femtoseconds, according to a new study.
Researchers identify high-order harmonic generation (HHG) as a key factor driving this ultrafast decoherence.
They model electron–environment interactions during HHG with a Lindblad master equation framework.
The study shows that superradiance and broadband emission interfere, causing loss of quantum coherence.
The findings are based on simulations; experimental testing is planned, and the work is published in Advanced Science.