They form a single quantum object, even if they are located far apart. (sciencedaily.com)
At such temperatures, the atoms are tightly packed and behave as a single, fluid quantum object and so can be easily manipulated. (scientificamerican.com)
Researchers hope that in the future they will be able to use a similar method to recreate wave functions of more complex quantum objects, such as certain atoms. (thescienceexplorer.com)