Photon-Mediated Interaction between Two Distant Atoms - Quantum PhysicsReport as inadecuate

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Abstract: We study the photonic interactions between two distant atoms which arecoupled by an optical element a lens or an optical fiber focussing part oftheir emitted radiation onto each other. Two regimes are distinguisheddepending on the ratio between the radiative lifetime of the atomic excitedstate and the propagation time of a photon between the two atoms. In the tworegimes, well below saturation the dynamics exhibit either typical features ofa bad resonator, where the atoms act as the mirrors, or typical characteristicsof dipole-dipole interaction. We study the coherence properties of the emittedlight and show that it carries signatures of the multiple scattering processesbetween the atoms. The model predictions are compared with the experimentalresults in J. Eschner {\it et al.}, Nature {\bf 413}, 495 2001.

Author: Stefan Rist, Jürgen Eschner, Markus Hennrich, Giovanna Morigi


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