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arXiv · 2608.17656

Single-atom detection with a quantum-controlled mechanical oscillator

Maxime Perdriat·Maciej Dziewiecki·Josef-Anton Agner·Massimiliano Rossi·Frederic Merkt·Martin Frimmer·Lukas Novotny
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Abstract

Using supersonic expansion, we create a time-gated, directional beam of Xe atoms with a narrow momentum distribution and detect their collisions with a levitated nanosphere cooled to its quantum ground state. We observe individual momentum kicks below 50 keV/c with 96% confidence and distinguish directional momentum transfer from the atomic beam against the background of thermal collisions. Our experiments constitute a first step toward the exploration of distance-dependent short-range interactions between atoms and levitated systems, as well as toward the use of levitated platforms for impulsive force sensing in previously unexplored parameter regimes.

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quant-phphysics.app-phphysics.atom-phphysics.optics

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Maxime Perdriat, Maciej Dziewiecki, Josef-Anton Agner, Massimiliano Rossi, Frederic Merkt, Martin Frimmer, Lukas Novotny. 2026-08-18. Single-atom detection with a quantum-controlled mechanical oscillator. https://doi.org/10.1103/tpvm-t75j

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