Realization of a Townes Soliton in a Two-Component Planar Bose Gas

B. Bakkali-Hassani, C. Maury, Y.-Q. Zou, É. Le Cerf, R. Saint-Jalm, P. C. M. Castilho, S. Nascimbene, J. Dalibard, and J. Beugnon
Phys. Rev. Lett. 127, 023603 – Published 9 July 2021
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Abstract

Most experimental observations of solitons are limited to one-dimensional (1D) situations, where they are naturally stable. For instance, in 1D cold Bose gases, they exist for any attractive interaction strength g and particle number N. By contrast, in two dimensions, solitons appear only for discrete values of gN, the so-called Townes soliton being the most celebrated example. Here, we use a two-component Bose gas to prepare deterministically such a soliton: Starting from a uniform bath of atoms in a given internal state, we imprint the soliton wave function using an optical transfer to another state. We explore various interaction strengths, atom numbers, and sizes and confirm the existence of a solitonic behavior for a specific value of gN and arbitrary sizes, a hallmark of scale invariance.

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  • Received 4 March 2021
  • Revised 7 May 2021
  • Accepted 24 May 2021

DOI:https://doi.org/10.1103/PhysRevLett.127.023603

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalNonlinear Dynamics

Authors & Affiliations

B. Bakkali-Hassani1, C. Maury1, Y.-Q. Zou1, É. Le Cerf1, R. Saint-Jalm3, P. C. M. Castilho2, S. Nascimbene1, J. Dalibard1, and J. Beugnon1

  • 1Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France
  • 2Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, Brazil
  • 3Department of Physics, Ludwig-Maximilians-Universität München, Schellingstrasse 4, D-80799 München, Germany

See Also

Observation of Scale Invariance in Two-Dimensional Matter-Wave Townes Solitons

Cheng-An Chen and Chen-Lung Hung
Phys. Rev. Lett. 127, 023604 (2021)

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Vol. 127, Iss. 2 — 9 July 2021

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