Feedback control of entanglement in a linear quantum network: A case study

Naoki Yamamoto, Hendra I. Nurdin, Matthew R. Jamest, Ian R. Petersen

研究成果: Conference contribution

抄録

In this paper, we consider a linear quantum network composed of two distantly separated cavities that are connected via a one-way optical field. When one of the cavity is damped and the other is undamped, the overall cavity state obtains a large amount of entanglement in its quadratures. This entanglement however immediately decays and vanishes in a finite time. That is, entanglement sudden-death occurs. We show that the proportional measurement feedback method proposed by Wiseman can avoid this entanglement suddendeath, and further, enhance the entanglement. It is also shown that the entangled state under feedback control is robust against signal loss in a realistic detector, indicating the reliability of the proposed proportional feedback method in practical situations.

本文言語English
ホスト出版物のタイトルProceedings of the 47th IEEE Conference on Decision and Control, CDC 2008
出版社Institute of Electrical and Electronics Engineers Inc.
ページ4528-4533
ページ数6
ISBN(印刷版)9781424431243
DOI
出版ステータスPublished - 2008
イベント47th IEEE Conference on Decision and Control, CDC 2008 - Cancun, Mexico
継続期間: 2008 12月 92008 12月 11

出版物シリーズ

名前Proceedings of the IEEE Conference on Decision and Control
ISSN(印刷版)0743-1546
ISSN(電子版)2576-2370

Other

Other47th IEEE Conference on Decision and Control, CDC 2008
国/地域Mexico
CityCancun
Period08/12/908/12/11

ASJC Scopus subject areas

  • 制御およびシステム工学
  • モデリングとシミュレーション
  • 制御と最適化

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