Stopping light gives atoms a memory

 作者:铁禀铟     |      日期:2019-03-15 01:19:02
By Mark Buchanan IN RECENT years, innovative quantum tricks have slowed down light, even stopping it altogether. Now by switching the light source off at the right time it might be possible to use “slow light” as a new way to store information for use in quantum communications and computing. In empty space, light travels at 300,000 kilometres per second. It goes a shade slower in glass and other materials,