Geometrical Rabi transitions between decoupled quantum states

Details Geometrical Rabi transitions between decoupled quantum states Geometrical Rabi transitions between decoupled quantum states

2008-09-17

arxiv.org/abs/0809.2860v1

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

A periodic perturbation such as a laser field cannot induce transitions between two decoupled states for which the transition matrix element vanishes. We show, however, that if in addition some system parameters are varied adiabatically, such transitions become possible via adiabatic-change-induced excitations to other states. We demonstrate that full amplitude transfer between the two decoupled states can be achieved, and more significantly, the evolution of the system only depends on its path in parameter space. Our technique then provides a valuable means of studying nontrivial geometrical dynamics via auxiliary states with large energy splittings.

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