Unconstrained distillation capacities of a pure-loss bosonic broadcast channel

Masahiro Takeoka, Kaushik P. Seshadreesan, Mark M. Wilde

研究成果: Conference contribution

11 被引用数 (Scopus)

抄録

Bosonic channels are important in practice as they form a simple model for free-space or fiber-optic communication. Here we consider a single-sender multiple-receiver pure-loss bosonic broadcast channel and determine the unconstrained capacity region for the distillation of bipartite entanglement and secret key between the sender and each receiver, whenever they are allowed arbitrary public classical communication. We show how the state merging protocol leads to achievable rates in this setting, giving an inner bound on the capacity region. We also determine an outer bound on the region and find that the outer bound matches the inner bound in the infinite-energy limit, thereby establishing the unconstrained capacity region for such channels. Our result could provide a useful benchmark for implementing a broadcasting of entanglement and secret key through such channels. An important open question relevant to practice is to determine the capacity region in both this setting and the single-sender single-receiver case when there is an energy constraint on the transmitter.

本文言語English
ホスト出版物のタイトルProceedings - ISIT 2016; 2016 IEEE International Symposium on Information Theory
出版社Institute of Electrical and Electronics Engineers Inc.
ページ2484-2488
ページ数5
ISBN(電子版)9781509018062
DOI
出版ステータスPublished - 2016 8月 10
外部発表はい
イベント2016 IEEE International Symposium on Information Theory, ISIT 2016 - Barcelona, Spain
継続期間: 2016 7月 102016 7月 15

出版物シリーズ

名前IEEE International Symposium on Information Theory - Proceedings
2016-August
ISSN(印刷版)2157-8095

Conference

Conference2016 IEEE International Symposium on Information Theory, ISIT 2016
国/地域Spain
CityBarcelona
Period16/7/1016/7/15

ASJC Scopus subject areas

  • 理論的コンピュータサイエンス
  • 情報システム
  • モデリングとシミュレーション
  • 応用数学

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