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Direct interaction between the atomic ensemble and the cavity field

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posted on 05.09.2013 by Qing Xu, Xiangming Hu

Figure 8. Direct interaction between the atomic ensemble and the cavity field. The system is off far one-photon resonances but on the Raman resonance.


We show that it is possible to use an atom–cavity reservoir to prepare the two-mode squeezed and entangled states of a hybrid system of an atomic ensemble and an optical field, which do not directly interact with each other. The essential mechanism is based on the combined effect of a two-mode squeezing interaction and a beam–splitter interaction between the system and the reservoir. The reservoir mechanism is important for quantum networking in that it allows an interface between a localized matter-based memory and an optical carrier of quantum information without direct interaction.