Quantum mutual information of an entangled state propagating through slow- and fast-light media

Ryan T. Glasser; Jeremy B. Clark; Quentin Glorieux; Ulrich Vogl; Paul D. Lett

doi:10.1117/12.2047545

21 February 2014 Quantum mutual information of an entangled state propagating through slow- and fast-light media

Ryan T. Glasser, Jeremy B. Clark, Quentin Glorieux, Ulrich Vogl, Paul D. Lett

Proceedings Volume 8998, Advances in Slow and Fast Light VII; 89980K (2014) https://doi.org/10.1117/12.2047545
Event: SPIE OPTO, 2014, San Francisco, California, United States

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.

Citation Download Citation

Ryan T. Glasser, Jeremy B. Clark, Quentin Glorieux, Ulrich Vogl, and Paul D. Lett "Quantum mutual information of an entangled state propagating through slow- and fast-light media", Proc. SPIE 8998, Advances in Slow and Fast Light VII, 89980K (21 February 2014); https://doi.org/10.1117/12.2047545

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