Two-color STIRAP in trapped-ion quantum states

We show how two-color Stimulated Raman Adiabatic Passage (STIRAP) can be executed in an N-level quantum system. The system of choice is the trapped-ion system which can be modeled by a spin-half system coupled to a harmonic oscillator. The two-color fields are the those that produce the spin-flip ``carrier" transition, and the first red sideband transition. Generalization to multiple ions and the potential to produce quantum `gates' are investigated.