Quantum mutual information of an entangled state propagating through a 
fast-light medium

Clark, Jeremy B.; Glasser, Ryan T.; Glorieux, Quentin; Vogl, Ulrich; Li, Tian; Jones, Kevin M.; Lett, Paul D.

doi:10.1038/NPHOTON.2014.112

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Quantum mutual information of an entangled state propagating through a fast-light medium

MPS-Authors

/persons/resource/persons201225

Vogl, Ulrich
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Clark, J. B., Glasser, R. T., Glorieux, Q., Vogl, U., Li, T., Jones, K. M., & Lett, P. D. (2014). Quantum mutual information of an entangled state propagating through a fast-light medium. NATURE PHOTONICS, 8(7), 515-519. doi:10.1038/NPHOTON.2014.112.

引用: https://hdl.handle.net/11858/00-001M-0000-002D-65DF-7

要旨

It is widely accepted that information cannot travel faster than c, the speed of light in vacuum(1-3). Here, we investigate the behaviour of quantum correlations and information in the presence of dispersion. To do so we send one half of an entangled state of light through a gain-assisted slow-or fast-light medium and detect the transmitted quantum correlations and quantum mutual information(4-6). We show that quantum correlations can be advanced by a small fraction of the correlation time, even in the presence of noise added by phase-insensitive gain. Additionally, although the peak of the quantum mutual information between the modes can be advanced, we find that the degradation of the mutual information due to added noise appears to prevent an advancement of the leading edge. In contrast, we demonstrate a significant delay of both the leading and trailing edges of the mutual information in a slow-light system.