Quantum droplets of quasi-one-dimensional dipolar BosetextendashEinstein condensates

by Matthew Edmonds, Thomas Bland, Nick Parker
Abstract:
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.
Reference:
Quantum droplets of quasi-one-dimensional dipolar BosetextendashEinstein condensates,
Matthew Edmonds, Thomas Bland, Nick Parker,
Journal of Physics Communications, 4, 125008, 2020.
Bibtex Entry:
@article{Edmonds_2020,
	doi = {10.1088/2399-6528/abcc3b},
	url = {https://doi.org/10.1088/2399-6528/abcc3b},
	year = 2020,
	month = {dec},
	publisher = {{IOP} Publishing},
	volume = {4},
	number = {12},
	pages = {125008},
	author = {Matthew Edmonds and Thomas Bland and Nick Parker},
	title = {Quantum droplets of quasi-one-dimensional dipolar Bose{textendash}Einstein condensates},
	journal = {Journal of Physics Communications},
	abstract = {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.}
}