4.8 Article

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

期刊

PHYSICAL REVIEW LETTERS
卷 127, 期 2, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.127.023603

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  1. ERC (Synergy UQUAM)
  2. European Union's Horizon 2020 Programme (QuantERA NAQUAS project)
  3. [ANR-18-CE30-0010]

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Researchers prepared solitons deterministically using a two-component Bose gas, confirming the existence of solitonic behavior for a specific value of gN and arbitrary sizes, a hallmark of scale invariance.
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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