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Abstract: We present a general scheme to determine the loss-free adiabaticeigensolutions dark-state polaritons of the interaction of multiple probelaser beams with a coherently driven atomic ensemble under conditions ofelectromagnetically induced transparency. To this end we generalize theMorris-Shore transformation to linearized Heisenberg-Langevin equationsdescribing the coupled light-matter system in the weak excitation limit. Forthe simple lambda-type coupling scheme the generalized Morris-Shoretransformation reproduces the dark-state polariton solutions of slow light.Here we treat a closed-loop dual-V scheme wherein two counter-propagatingcontrol fields generate a quasi stationary pattern of two counter-propagatingprobe fields - so-called stationary light. We show that contrary to previouspredictions,there exists a single unique dark-state polariton; it obeys asimple propagation equation.



Autor: F. E. Zimmer, J. Otterbach, R. G. Unanyan, B. W. Shore, M. Fleischhauer

Fuente: https://arxiv.org/







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