Bright Soliton to Quantum Droplet Transition in a Mixture of Bose-Einstein Condensates

Attractive Bose-Einstein condensates can host two types of macroscopic self-bound states: bright solitons and quantum droplets. Here, we investigate the connection between them with a Bose-Bose mixture confined in an optical waveguide. We show theoretically that, depending on atom number and interac...

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Bibliographic Details
Published in:Physical review letters 2018-03, Vol.120 (13), p.135301-135301, Article 135301
Main Authors: Cheiney, P, Cabrera, C R, Sanz, J, Naylor, B, Tanzi, L, Tarruell, L
Format: Article
Language:English
Subjects:
Bose-Einstein condensates
Droplets
Matter & antimatter
Optical waveguides
Solitary waves
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Summary:Attractive Bose-Einstein condensates can host two types of macroscopic self-bound states: bright solitons and quantum droplets. Here, we investigate the connection between them with a Bose-Bose mixture confined in an optical waveguide. We show theoretically that, depending on atom number and interaction strength, solitons and droplets can be smoothly connected or remain distinct states coexisting only in a bistable region. We 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.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.120.135301