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

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

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.

Keywords: dense coding Greenberger-Horne-Zeilinger state cross-Kerr nonlinearity

Received: 09 January 2012
Revised: 24 May 2012
Accepted manuscript online:

PACS:	03.65.-w	(Quantum mechanics)
	03.67.-a	(Quantum information)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61068001 and 11147174).

Corresponding Authors: Zhang Shou
E-mail: szhang@ybu.edu.cn

Cite this article:

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 2012 Chin. Phys. B 21 100301

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

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