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

• URL: http://arxiv.org/abs/2501.16200v1
• Date: Mon, 27 Jan 2025 16:55:02 GMT
• Title: Probing non-Gaussian correlations through entanglement generation in a many-body quantum system
• Authors: J. van de Kraats, D. J. M. Ahmed-Braun, V. E. Colussi, S. J. J. M. F. Kokkelmans,
• Abstract summary: We show that for a uniform quantum gas, there exists a natural connection between non-Gaussian correlations and momentum-space entanglement. This entanglement can be directly measured in an experiment using time-of-flight techniques.
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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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