A realizable multi-bit dense coding scheme with an Einstein–Podolsky–Rosen channel

doi:10.1088/1674-1056/21/10/100301

中国物理B ›› 2012, Vol. 21 ›› Issue (10): 100301-100301.doi: 10.1088/1674-1056/21/10/100301

A realizable multi-bit dense coding scheme with an Einstein–Podolsky–Rosen channel

郭奇^a, 程留永^b, 王洪福^a, 张寿^a, Yeon Kyu-Hwang^c

a Department of Physics, College of Science, Yanbian University, Yanji 133002, China;
b Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
c BK21 Program Physics & Department of Physics, College of Natural Science, Chungbuk National University, Cheonju, Chungbuk 361-763, Republic of Korea

收稿日期:2012-01-09 修回日期:2012-05-24 出版日期:2012-09-01 发布日期:2012-09-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61068001 and 11147174).

A realizable multi-bit dense coding scheme with an Einstein–Podolsky–Rosen channel

Guo Qi (郭奇)^a, Cheng Liu-Yong (程留永)^b, Wang Hong-Fu (王洪福)^a, Zhang Shou (张寿)^a, Yeon Kyu-Hwang^c

a Department of Physics, College of Science, Yanbian University, Yanji 133002, China;
b Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
c BK21 Program Physics & Department of Physics, College of Natural Science, Chungbuk National University, Cheonju, Chungbuk 361-763, Republic of Korea

Received:2012-01-09 Revised:2012-05-24 Online:2012-09-01 Published:2012-09-01
Contact: Zhang Shou E-mail:szhang@ybu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61068001 and 11147174).

摘要/Abstract

摘要： We propose a multi-bit dense coding scheme by using only an Einstein-Podolsky-Rosen (EPR) channel and assistant qubits. It is shown that no matter how many classical bits there are, the quantum channel is always a Bell state. The present dense coding process can also prepare non-local multi-particle Greenberger-Horne-Zeilinger (GHZ) states at one of the participants. The quantum circuits for this dense coding process are constructed, the deterministic implementation method in an optical system based on the cross-Kerr nonlinearities is shown.

关键词: dense coding, Greenberger-Horne-Zeilinger state, cross-Kerr nonlinearity

Abstract: We propose a multi-bit dense coding scheme by using only an Einstein-Podolsky-Rosen (EPR) channel and assistant qubits. It is shown that no matter how many classical bits there are, the quantum channel is always a Bell state. The present dense coding process can also prepare non-local multi-particle Greenberger-Horne-Zeilinger (GHZ) states at one of the participants. The quantum circuits for this dense coding process are constructed, the deterministic implementation method in an optical system based on the cross-Kerr nonlinearities is shown.

Key words: dense coding, Greenberger-Horne-Zeilinger state, cross-Kerr nonlinearity

中图分类号: (Quantum mechanics)

03.65.-w

03.67.-a (Quantum information)

郭奇, 程留永, 王洪福, 张寿, Yeon Kyu-Hwang. A realizable multi-bit dense coding scheme with an Einstein–Podolsky–Rosen channel[J]. 中国物理B, 2012, 21(10): 100301-100301.

Guo Qi (郭奇), Cheng Liu-Yong (程留永), Wang Hong-Fu (王洪福), Zhang Shou (张寿), Yeon Kyu-Hwang. A realizable multi-bit dense coding scheme with an Einstein–Podolsky–Rosen channel[J]. Chin. Phys. B, 2012, 21(10): 100301-100301.

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A realizable multi-bit dense coding scheme with an Einstein–Podolsky–Rosen channel

A realizable multi-bit dense coding scheme with an Einstein–Podolsky–Rosen channel

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