The ability to precisely control and change properties of a photon, including polarization, position in space, and arrival time, gave rise to a wide range of communication technologies we use today, including the Internet. The next generation of photonic technologies, such as photonic quantum networks and computers, will require even more control over the properties of a photon.
Click here for original story, On-chip frequency shifters in the gigahertz range could be used in next generation quantum computers and networks
Source: Phys.org