Matter-wave interferometry with metal nanoparticles

January 1, 2026Open Access

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Key Points

The goal is to explore matter-wave interference using metal nanoparticles and examine possible modifications in quantum mechanics.
Designed a Talbot-Lau interferometer with a cryogenic gas aggregation source and a grating period of 133 nm.
Characterized properties of the clusters affecting their interactions with the gratings.
Measured interference patterns and coherence under various conditions.
Demonstrated matter-wave interference of sodium nanoparticles with over 7000 atoms, achieving unprecedented mass of over 170 kDa.
Measured interference consistent with linear quantum mechanics under experimental uncertainty.
Confirmed stable interference patterns for larger clusters in the Megadalton range, indicating robustness against external disturbances.

Demonstrates matter-wave interference in nanoparticles, suggesting new quantum mechanics insights.

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Sebastian Pedalino (2026) studied this question.

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