Optimised control of Stark-shift-chirped rapid-adiabatic-passage in a lambda-type three-level system

摘要

Inhomogeneous broadening of energy levels is one of the principal limitingfactors for achieving "slow" or "stationary" light in solid state media bymeans of electromagnetically induced transparency (EIT), a quantum version ofstimulated Raman adiabatic passage (STIRAP). Stark-shift-chirpedrapid-adiabatic-passage (SCRAP) has been shown to be far less sensitive toinhomogeneous broadening than STIRAP, a population transfer technique to whichit is closely related. We further optimise the pulses used in SCRAP to be evenless sensitive to inhomogeneous broadening in a lambda-type three-level system.The optimised pulses perform at a higher fidelity than the standard gaussianpulses for a wide range of detunings (i.e. large inhomogeneous broadening).