That’s right. Temporal cloaking. DARPA has demonstrated it. The details appeared today on Nature’s site, in an article entitled Demonstration of Temporal Cloaking.
The report about this in Wired today gives about as much information as most of us non-physicists can grasp. And a really cool graphic.
Remarkable progress has been made in developing materials that can manipulate electromagnetic waves in a way that is impossible with natural structures, culminating in the design of spatial cloaks with the potential to hide an object within a ‘hole in space’.