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Proceedings Paper

Quantum mutual information of an entangled state propagating through slow- and fast-light media
Author(s): Ryan T. Glasser; Jeremy B. Clark; Quentin Glorieux; Ulrich Vogl; Paul D. Lett
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Paper Abstract

Due to its vital role in many quantum information and communication protocols, much theoretical and experi- mental work has been conducted in order to investigate the fundamental properties of entanglement. In this work we describe an experimental investigation into the behavior of continuous-variable entanglement and quantum mutual information upon propagation through slow- and fast-light media. A four-wave mixing process in warm atomic vapor is used to generate an entangled two-mode squeezed vacuum state of light. One of the two modes of the resulting state is then sent through a second four-wave mixing process that is tuned to exhibit either slow- or fast-light properties. The cross-correlation and quantum mutual information shared between the resulting modes is quanti ed, and di erences in their behavior after propagation through slow- and fast-light media are discussed.

Paper Details

Date Published: 21 February 2014
PDF: 7 pages
Proc. SPIE 8998, Advances in Slow and Fast Light VII, 89980K (21 February 2014); doi: 10.1117/12.2047545
Show Author Affiliations
Ryan T. Glasser, Joint Quantum Institute of National Institute of Standards and Technology and Univ. of Maryland (United States)
Jeremy B. Clark, Joint Quantum Institute of National Institute of Standards and Technology and Univ. of Maryland (United States)
Quentin Glorieux, Lab. Kastler Brossel, CNRS, Univ. Pierre et Marie Curie (France)
Ulrich Vogl, Max-Planck-Institut für die Physik des Lichts (Germany)
Paul D. Lett, Joint Quantum Institute of National Institute of Standards and Technology and Univ. of Maryland (United States)


Published in SPIE Proceedings Vol. 8998:
Advances in Slow and Fast Light VII
Selim M. Shahriar; Frank A. Narducci, Editor(s)

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