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Cavity-assisted spontaneous emission of a single three-level atom as a single-photon source

2009/11/19 by Mikayel Khanbekyan, Khanbekyan, Mikayel, Dirk-Gunnar Welsch +1
Physics and Astronomy · #FOS: Physical sciences #Quantum Physics (quant-ph) #quant-ph

paper · pdf · doi:10.48550/arxiv.0911.3746

6 pages, 6 figures

arxiv created 2009/11/19 · arxiv updated 2016/09/08

Abstract

Stimulated Raman interaction of a classically pumped single three-level Λ-type atom in a resonator cavity featuring both radiative and unwanted losses is studied. It is shown that in the regime of stimulated adiabatic Raman passage the excited outgoing wave packet of the cavity-assisted electromagnetic field can be prepared in a one-photon Fock state with high efficiency. In this regime, the spatio-temporal shape of the wave packet does not depend on the interaction shape of the pump field, provided that the interaction of the atom with the pump is time-delayed with respect to the interaction of the atom with the cavity-assisted field. Therefore, the scheme can be used to generate a sequence of identical radiation pulses each of almost one-photon Fock state. It is further shown that the spatio-temporal shape of the outgoing wave packet can be manipulated by controlling the time of interaction between the atom and the cavity-assisted electromagnetic field.

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