Normally I'd blame the media for putting a sensational spin on things, but the paper is really at fault here. The usual metamaterials cloaking trick involves s

Normally I'd blame the media for putting a sensational spin on things, but the paper is really at fault here. The usual metamaterials cloaking trick involves spatial-domain cloaking. You make the probe beam go around the target. They're doing time-domain cloaking by selectively altering the velocity of the beam. Not time cloaking.