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Slow and Fast Light (SL)

‘Storage of Light’ in a Fast-Light Atomic Medium

A. M. Akulshin, A. Lezama, Blake Orr, Andrei I. Sidorov, Russell McLean, Peter Hannaford

Published Jan 1, 2006• 0 citations
Publisher

Abstract

We demonstrate both experimentally and by numerical modelling based on the optical Bloch equations that storage and retrieval of optical pulses are remarkably similar in fast-and slow-light atomic media with ground-state Zeeman coherences.
DOI
10.1364/sl.2006.me15

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Storage of light pulses in Rb vapour with bright Zeeman coherences and the associated enhanced absorption and steep negative dispersion is reported. Our experimental observations are qualitatively similar to the well-known proof-of-principle demonstration of light storage (D F Phillips et al 2001 Phys. Rev. Lett. 86 783), but obtained under conditions where electromagnetically induced transparency (EIT) does not exist and the slow-light dark-state polariton model does not apply. Under the present experimental conditions the retrieved pulses obtained in atomic media with dark or bright Zeeman coherences have very similar exponentially decaying slopes which are independent of the shape of the incoming signal pulse. Numerical modelling based on the optical Bloch equations reproduces the essential features of the experimental observations.