Quantum networkers, watch out: Twisting light slows it down

Slowing down the speed of light may sound exciting if you're a sci-fi author, but if you're an optical engineer, it might just make your workdays longer.Scientists at the University of Ottawa say twisting light into a corkscrew shape slows it down. Doing this can cut 0.1 percent off the speed of light, a tiny tap of the brakes that nevertheless could create a traffic jam for future networks and even quantum computing.Twisted light is emerging as a possible boost for optical networking, which is