Fast Quantum Interference of a Nanoparticle via Optical Potential Control

Lukas Neumeier, Mario A. Ciampini, Oriol Romero-Isart, Markus Aspelmeyer, Nikolai Kiesel (Corresponding author)

Publications: Working paperPreprint


We introduce and theoretically analyze a scheme to prepare and detect non-Gaussian quantum states of an optically levitated particle via the interaction with a light pulse that generates cubic and inverted potentials. We show that this allows operating on short time- and lengthscales, which significantly reduces the demands on decoherence rates in such experiments. Specifically, our scheme predicts the observation of interference of nanoparticles with a mass above 108 atomic mass units delocalised over several nanometers, on timescales of milliseconds, when operated at vacuum levels around 10−10~mbar and at room temperature. We discuss the prospect of using this approach for coherently splitting the wavepacket of massive dielectric objects using neither projective measurements nor an internal level structure.
Original languageEnglish
Number of pages23
Publication statusPublished - 25 Jul 2022

Austrian Fields of Science 2012

  • 103026 Quantum optics
  • 103015 Condensed matter


  • quant-ph
  • cond-mat.mes-hall

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