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English

Interference of spontaneous emission of light from two solid-state atomic ensembles

Published inNew journal of physics, vol. 9, no. 11, 9 p.
Publication date2007
Abstract

We report an interference experiment of spontaneous emission of light from two distant solid-state ensembles of atoms that are coherently excited by a short laser pulse. The ensembles are erbium ions doped into two LiNbO3 crystals with channel waveguides, which are placed in the two arms of a Mach–Zehnder interferometer. The light that is spontaneously emitted after the excitation pulse shows first-order interference. By a strong collective enhancement of the emission, the atoms behave as ideal two-level quantum systems and no which-path information is left in the atomic ensembles after emission of a photon. This results in a high fringe visibility of 95%, which implies that the observed spontaneous emission is highly coherent.

Citation (ISO format)
AFZELIUS, Mikael et al. Interference of spontaneous emission of light from two solid-state atomic ensembles. In: New journal of physics, 2007, vol. 9, n° 11, p. 9 p. doi: 10.1088/1367-2630/9/11/413
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ISSN of the journal1367-2630
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