Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: In-Situ Dual-Port Polarization Contrast Imaging of Faraday Rotation in a
  High Optical Depth Ultracold 87Rb Atomic Ensemble   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.

1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph