Quantum Illusions official logo is just text and the words "Quantum Illusions" and "Media Solutions of the future" ie;
Media Solutions of the future
However of the the years we have sprused it up a little and used various designs that we have changed from time to time.
Click here for other designs for Quantum Illusions.
This was the offical logo until the game Quake arrived on the scene. Though different, it was similar. I did not have the resourses back then to take the design to court.