Substituting electrons with photons

It has been quite a while since the last post. Here's something directly from the labs of the University of Pennsylvania:

First Physical 'Metatronic' Circuit Created

 The technological world of the 21st century owes a tremendous amount to advances in electrical engineering, specifically, the ability to finely control the flow of electrical charges using increasingly small and complicated circuits. And while those electrical advances continue to race ahead, researchers at the University of Pennsylvania are pushing circuitry forward in a different way, by replacing electricity with light.

Original

This discovery, or rather, technology has huge implications. Light travels a million times faster than electricity (exaggeration. don't quote the math), but that's not the major thing here. Electronic circuits are limited by orientation of poles, and the nature of electrons themselves. If light is used to replace them, infinite numbers of circuits can be created. There will be myriad options, more complex circuits can be created to perform tasks that would otherwise be impossible with the current electronic circuits.

The field of Electrical and Electronics Engineering has just undergone a paradigm shift- There are so much more to discover.