Magnetic coherence gratings in a high-flux atomic beam
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- Tonyushkin, A., Kumarakrishnan, A., Turlapov, A. et al. Eur. Phys. J. D (2010) 58: 39. doi:10.1140/epjd/e2010-00085-8
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Magnetic coherence gratings have been created in a thermal beam of rubidium atoms. The coherence gratings involve superposition of magnetic sublevels of a single hyperfine ground state. These gratings are created via interaction with a single pulse that drives a two-photon transition between magnetic sublevels of the ground state. After the grating dephases due to the velocity distribution of the atoms, it is revived by the action of a second pulse, an effect that is similar to a photon echo. Such experiment is a first step toward generating periodic atomic structures using a high-flux atomic beam. Here, we present the experimental results and provide a detailed description of the apparatus that produces a high flux beam of thermal rubidium atoms.