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arXiv · 1008.3920

Observation of ground-state quantum beats in atomic spontaneous emission

D. G. Norris·L. A. Orozco·P. Barberis-Blostein·H. J. Carmichael
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Abstract

We report ground-state quantum beats in spontaneous emission from a continuously driven atomic ensemble. Beats are visible only in an intensity autocorrelation and evidence spontaneously generated coherence in radiative decay. Our measurement realizes a quantum eraser where a first photon detection prepares a superposition and a second erases the "which-path" information in the intermediate state.

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D. G. Norris, L. A. Orozco, P. Barberis-Blostein, H. J. Carmichael. 2010-08-23. Observation of ground-state quantum beats in atomic spontaneous emission. https://doi.org/10.1103/physrevlett.105.123602

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