Here is the original paper on Arxiv:<p><a href="http:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;1505.03859" rel="nofollow">http:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;1505.03859</a><p>What the linked article fails to mention among all the fantasizing about light sabers is that this kind of interaction is only possible in matter. These &quot;molecules made of light&quot; can only exist when photons interact with atoms while the light travels in a very special medium.<p>In vacuum, photon-photon interactions do not allow for any kind of bound states like that.