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arXiv · 1308.6077

Multipartite entangled light from driven microcavities

D. Pagel·H. Fehske·J. Sperling·W. Vogel
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Abstract

The generation and the characterization of multipartite entangled light is an important and challenging task in quantum optics. In this paper the entanglement properties of the light emitted from a planar semiconductor microcavity are studied. The intracavity scattering dynamics leads to the emission of light that is described by a fourpartite W state. Its multipartite correlations are identified by using the method of entanglement witnesses. Entanglement conditions are derived, which are based on a general witness constructed from W states. The results can be used to detect entanglement of light that propagates through lossy and even turbulent media.

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D. Pagel, H. Fehske, J. Sperling, W. Vogel. 2013-10-10. Multipartite entangled light from driven microcavities. https://doi.org/10.1103/physreva.88.042310

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