Experimental technique is approaching (or in some applications has reached) the point where it is possible to continuously monitor and manipulate physical systems whose behaviour exhibits quantum mechanical effects. Quantum engineering is emerging as quantum mechanics evolves from its origins in the descriptive science of physics to the prescriptive science of engineering. Quantum control engineering is one aspect of this evolution, and will provide an important methodology for the development of new quantum technologies. In this talk I will describe what quantum control is, some of the underlying fundamentals. I also discuss some of our recent work in this area, which ranges from fundamental concepts to specific applications in quantum optics.