In-situ dual-port polarization contrast imaging of Faraday rotation in a high optical depth ultracold 87Rb atomic ensemble

Franziska Kaminski; Nir Shlomo Kampel; Mads Peter Hornbak Steenstrup; Axel Rudolf Griesmaier; Eugene Simon Polzik; Jörg Helge Müller

doi:10.1140/epjd/e2012-30038-0

In-situ dual-port polarization contrast imaging of Faraday rotation in a high optical depth ultracold ⁸⁷Rb atomic ensemble

Franziska Kaminski, Nir Shlomo Kampel, Mads Peter Hornbak Steenstrup, Axel Rudolf Griesmaier, Eugene Simon Polzik, Jörg Helge Müller

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Abstract

We study the effects of high optical depth and density on the performance of a light-atom quantum interface. An in-situ imaging method, a dual-port polarization contrast technique, is presented. This technique is able to compensate for image distortions due to refraction. We propose our imaging method as a tool to characterize atomic ensembles for high capacity spatial multimode quantum memories. Ultracold dense inhomogeneous rubidium samples are imaged and we find a resonant optical depth as high as 680 on the D1 line. The measurements are compared with light-atom interaction models based on Maxwell-Bloch equations. We find that an independent atom assumption is insufficient to explain our data and present corrections due to resonant dipole-dipole interactions.

Original language	English
Journal	The European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics
Volume	66
Issue number	9
Pages (from-to)	227
ISSN	1434-6060
DOIs	https://doi.org/10.1140/epjd/e2012-30038-0
Publication status	Published - 4 Sept 2012

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http://dx.doi.org/10.1140/epjd/e2012-30038-0

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In-situ dual-port polarization contrast imaging of Faraday rotation in a high optical depth ultracold ⁸⁷Rb atomic ensemble. / Kaminski, Franziska; Kampel, Nir Shlomo; Steenstrup, Mads Peter Hornbak et al.
In: The European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics, Vol. 66, No. 9, 04.09.2012, p. 227.

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AU - Kaminski, Franziska

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AU - Steenstrup, Mads Peter Hornbak

AU - Griesmaier, Axel Rudolf

AU - Polzik, Eugene Simon

AU - Müller, Jörg Helge

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In-situ dual-port polarization contrast imaging of Faraday rotation in a high optical depth ultracold 87Rb atomic ensemble

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In-situ dual-port polarization contrast imaging of Faraday rotation in a high optical depth ultracold ⁸⁷Rb atomic ensemble