Fidelity and information in the quantum teleportation of continuous variables
Physical Review A. Atomic, Molecular, and Optical Physics 62 巻 6 号
062304-1-062304-4 頁
2000-11-09 発行
アクセス数 : 579 件
ダウンロード数 : 141 件
今月のアクセス数 : 6 件
今月のダウンロード数 : 0 件
この文献の参照には次のURLをご利用ください : https://ir.lib.hiroshima-u.ac.jp/00018694
| ファイル情報(添付) | |
| タイトル ( eng ) |
Fidelity and information in the quantum teleportation of continuous variables
|
| 作成者 |
Ide Toshiki
Kobayashi Takayoshi
Furusawa Akira
|
| 収録物名 |
Physical Review A. Atomic, Molecular, and Optical Physics
|
| 巻 | 62 |
| 号 | 6 |
| 開始ページ | 062304-1 |
| 終了ページ | 062304-4 |
| 抄録 |
Ideally, quantum teleportation should transfer a quantum state without distortion and without providing any information about that state. However, quantum teleportation of continuous electromagnetic-field variables introduces additional noise, limiting the fidelity of the quantum-state transfer. In this article, the operator describing the quantum-state transfer is derived. The transfer operator modifies the probability amplitudes of the quantum state in a shifted photon-number basis by enhancing low photon numbers and suppressing high photon numbers. This modification of the statistical weight corresponds to a measurement of finite resolution performed on the original quantum state. The limited fidelity of quantum teleportation is thus shown to be a direct consequence of the information obtained in the measurement.
|
| 言語 |
英語
|
| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
|
| 発行日 | 2000-11-09 |
| 権利情報 |
Copyright (c) 2000 American Physical Society.
|
| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1094-1622
[DOI] 10.1103/PhysRevA.62.062304
[NCID] AA10764867
[DOI] http://dx.doi.org/10.1103/PhysRevA.62.062304
|
