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arXiv · 1710.11079

Bright soliton to quantum droplet transition in a mixture of Bose-Einstein condensates

P. Cheiney·C. R. Cabrera·J. Sanz·B. Naylor·L. Tanzi·L. Tarruell
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Abstract

Attractive Bose-Einstein condensates can host two types of macroscopic self-bound states of different nature: bright solitons and quantum liquid droplets. Here, we investigate the connection between them with a Bose-Bose mixture confined in an optical waveguide. We develop a simple theoretical model to show that, depending on atom number and interaction strength, solitons and droplets can be smoothly connected or remain distinct states coexisting only in a bi-stable region. We experimentally measure their spin composition, extract their density for a broad range of parameters and map out the boundary of the region separating solitons from droplets.

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P. Cheiney, C. R. Cabrera, J. Sanz, B. Naylor, L. Tanzi, L. Tarruell. 2017-10-30. Bright soliton to quantum droplet transition in a mixture of Bose-Einstein condensates. https://doi.org/10.1103/physrevlett.120.135301

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