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Experimental superradiance and slow light effects for quantum memories
Andreas Walther, Atia Amari, Stefan Kröll +1
The effects of high optical depth phenomena, such as superradiance, are investigated in potential quantum memory materials. The results may have relevance for several schemes, incl…
Quantum memory for light using extended atomic ensembles in a tunable cavity
Alexey Kalachev
Cavity-assisted storage and retrieval of single-photon wave packets in optically thin spatially extended resonant materials are analyzed. It is shown that the use of cavity tuning…
Backward retrieval in optical quantum memory controlled by an external field
Alexey Kalachev, Stefan Kroll
A scheme for backward retrieval in optical quantum memories in which information is stored in collective states of an extended resonant atomic ensemble is developed such that phase…
Quantum storage on subradiant states in an extended atomic ensemble
Alexey Kalachev
A scheme for coherent manipulation of collective atomic states is developed such that total subradiant states, in which spontaneous emission is suppressed into all directions due t…
Instantaneous processing of "slow light": amplitude-duration control, storage, and splitting
R. N. Shakhmuratov, A. A. Kalachev, J. Odeurs
Nonadiabatic change of the control field or of the low-frequency coherence allows for an almost instantaneous change of the signal field propagating in a thick resonant absorber wh…
Coherent control of collective spontaneous emission in an extended atomic ensemble and quantum storage
Alexey Kalachev, Stefan Kroll
Coherent control of collective spontaneous emission in an extended atomic ensemble resonantly interacting with single-photon wave packets is analyzed. A scheme for coherent manipul…