Photonic crystal operation faster than electronics?

[Gerenuk]

I've just read an article about IT with light instead of electrons:
http://focus.aps.org/story/v22/st15

I wonder, is there any indication that light processing will be faster than conventional electronics? Information transport is faster, but what about logic operations?
What would be advantages of computers based on photons?

 

[dlgoff]

What would be advantages of computers based on photons?

Small and fast.
Here's a little Wikipedia article on the subject.