Scientists can now “squeeze” light
Date: Sunday, November 01, 2015 @ 01:47:11 EDT
(via Keelynet.com) Have you ever wondered why we don’t use light to transmit messages? Nothing can travel faster than the speed of light, but while we use light to carry signals along fiber optic cables, we use electrons to process sound and information in our phones and computers.
The reason has always been because light particles–photons—are extremely difficult to manipulate, whereas electrons can be manipulated relatively easily.
The physicists, led by Professor Eric Mazur, have created a material where the phase velocity of light is infinite. Their results were published in Nature Photonics on Oct. 19th. “The phase speed is infinite—much larger, infinitely larger than the speed of light,” Mazur tells Quartz.
This doesn’t mean light itself is traveling faster than the speed of light, which would violate the laws of relativity. “Phase velocity” refers to the speed of the crest of waves that ripple out when light strikes a material. The Harvard scientists created a material that allows these wave crests to move infinitely fast.
This is a strange thought to wrap your head around, and means the crests of the waves are oscillating through time, but not space. Under these peculiar conditions, the Harvard scientists found that it’s easy to manipulate the photons, squeezing them down to the microscopic scale and turning them around. In other words, we can treat photons in the same way we currently manipulate electrons...
Full article: http://www.keelynet.com/news/102815p.html
Nature Photonics : http://www.nature.com/nphoton/journal/v9/n11/full/nphoton.2015.198.html