Physics – Quantum Physics
Scientific paper
2009-10-21
Opt. Commun. 283 (2010) 1346
Physics
Quantum Physics
Scientific paper
10.1016/j.optcom.2009.11.080
We present a method for achieving complete population transfer in a two-state quantum system via adiabatic time evolution in which, contrary to conventional rapid adiabatic passage produced by chirped pulses, there occurs no crossing of diabatic energy curves: there is no sign change of the detuning. Instead, we use structured pulses, in which, in addition to satisfying conditions for adiabatic evolution, there occurs a sign change of the Rabi frequency when the detuning is zero. We present simulations that offer simple geometrical interpretation of the two-dimensional motion of the Bloch vector for this system, illustrating how both complete population inversion and complete population return occur for different choices of structured pulses.
Rangelov Andon A.
Shore Bruce W.
Vitanov Nikolay V.
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