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. 2020 Jun 8;11:2863. doi: 10.1038/s41467-020-16656-0

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a, b Energy-resolved real-space images under on-site pumping conditions little above threshold (a P = 2.4 nJ/pulse) and far above threshold (b P = 18.9 nJ/pulse). c, d The intensity traces (black) are fitted by an exponential function (red). Narrowing of the spatial extension of the condensate from 7.0 ± 0.8 μm slightly above threshold to 3.6 ± 0.5 μm at approximately one order of magnitude above threshold characterizes the gap state. In the insets, the same profiles are shown in log scale.