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arXiv · 2501.16200

Probing non-Gaussian correlations through entanglement generation in a many-body quantum system

J. van de Kraats·D. J. M. Ahmed-Braun·V. E. Colussi·S. J. J. M. F. Kokkelmans
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Abstract

In understanding strongly correlated quantum systems, quantifying the non-Gaussian nature of interparticle correlations is invaluable. We show that, for a uniform quantum gas, there exists a natural connection between non-Gaussian correlations and the generation of momentum-space entanglement. Furthermore, this entanglement can be directly measured in an experiment using time-of-flight techniques. To prototype our method, we numerically study entanglement generation in a degenerate Bose gas following a quench to the unitary regime, where Gaussian and non-Gaussian correlations are generated sequentially in time.

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J. van de Kraats, D. J. M. Ahmed-Braun, V. E. Colussi, S. J. J. M. F. Kokkelmans. 2025-01-27. Probing non-Gaussian correlations through entanglement generation in a many-body quantum system. https://doi.org/10.1103/physreva.111.l041302

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