Quantum droplets of quasi-one-dimensional dipolar Bose-Einstein condensates

Ultracold dipolar droplets have been realized in a series of ground-breaking experiments, where the stability of the droplet state is attributed to beyond-mean-field effects in the form of the celebrated Lee-Huang-Yang (LHY) correction. We scrutinize the dipolar droplet states in a one-dimensional c...

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Bibliographic Details
Published in:Journal of physics communications 2020-12, Vol.4 (12), p.125008
Main Authors: Edmonds, Matthew, Bland, Thomas, Parker, Nick
Format: Article
Language:English
Subjects:
dipolar bose-einstein condensates
low dimensional systems
quantum droplets
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Summary:Ultracold dipolar droplets have been realized in a series of ground-breaking experiments, where the stability of the droplet state is attributed to beyond-mean-field effects in the form of the celebrated Lee-Huang-Yang (LHY) correction. We scrutinize the dipolar droplet states in a one-dimensional context using a combination of analytical and numerical approaches, and identify experimentally viable parameters for accessing our findings for future experiments. In particular we identify regimes of stability in the restricted geometry, finding multiple roton instabilities as well as regions supporting quasi-one-dimensional droplet states. By applying an interaction quench to the droplet, a modulational instability is induced and multiple droplets are produced, along with bright solitons and atomic radiation. We also assess the droplets robustness to collisions, revealing population transfer and droplet fission.
ISSN:2399-6528
2399-6528
DOI:10.1088/2399-6528/abcc3b