基于二到六位比特编码的单量子比特丢失纠错
PDF下载 (323)韩 超.基于二到六位比特编码的单量子比特丢失纠错[J].宁波大学学报(理工版),2013,26(01):110-112.DOI:
HAN Chao.Quantum Error Correction for Qubit Loss via Two-to-six Qubit Encoding[J].Journal of Ningbo University(Natural Science & Engineering Edition),2013,26(01):110-112.DOI:
| Title: | Quantum Error Correction for Qubit Loss via Two-to-six Qubit Encoding |
| 作者: | 韩 超 |
| Author(s): | HAN Chao |
| 关键词: | 量子编码; 量子纠错; 比特丢失; 量子通信 |
| Keywords: | quantum encoding; quantum error correction; qubit loss; quantum communication |
| 分类号: | O413 |
| 文献标识码: | A |
| 摘要: | 鉴于利用光子在光纤中传输来进行量子通信时, 最难纠正的错误是光子丢失情况, 提出一种两位逻辑比特到六位物理比特的编码方案. 当1个光子丢失时, 通过补充处于特定初始态的光子, 并执行一系列逻辑操作与投影测量便可纠正错误, 使得输出态与输入态一致. 方案在执行过程中无需辅助比特, 在一定条件下的通信效率比以往方案有所提高. |
| Abstract: | A two-to-six qubit encoding scheme which can recover the loss of one qubit in the transmission is presented. The qubit loss is first detected using a quantum nondemolition measure and then transformed into a standard qubit error by inserting a new photon. The state of qubits is reconstructed via a sequence of one projective measurement, two single-qubit gates, and five controlled-NOT operations. In the process no ancillary qubits are required. Finally the success probability is analyzed. |
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| 备注/Memo: | 收稿日期: 2012?10?12.基金项目: 国家自然科学基金（11204146）; 宁波大学人才基金（2006467）; 宁波大学科研基金（xkl055）.作者简介: 韩 超（1979－）, 男, 湖南南县人, 博士/讲师, 主要研究方向: 量子信息. Email: hanchao@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
