And the group did not have to go to a galaxy far, far away to do it.
But they did have to use a set of extreme conditions, including ultra-low temperatures.
Describing their work in Nature, the scientists said: "The fundamental properties of light derive from its constituent particles - massless quanta (photons) that do not interact with one another.
"However, it has long been known that the realisation of coherent interactions between individual photons, akin to those associated with conventional massive particles, could enable a wide variety of novel scientific and engineering applications."
But it is doubtful these uses will include lightsabres, and is more likely to involve building a super-fast quantum computer, which will harness the power of atoms and molecules to perform memory and processing tasks.
Or the system might one day even be used to create complex three-dimensional structures – such as crystals – completely out of light.
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