Quantum superdense coding based on hyperentanglement

doi:10.1088/1674-1056/21/8/080303

Abstract We present a scheme for quantum superdense coding with hyperentanglement, in which the sender can transfer four bits of classical information by sending only one photon. The important device in the scheme is hyperentangled Bell-state analyzer in both of polarization and frequency degrees of freedom, which is also constructed in the paper by using quantum nondemolition detector assisted by cross-Kerr nonlinearity. Our scheme can transfer more information with less resources than the existing schemes and is nearly deterministic and nondestructive.

Keywords: quantum superdense coding hyperentangled state Bell-state analysis

Received: 16 December 2011
Revised: 12 February 2012
Accepted manuscript online:

PACS:	03.65.Ud	(Entanglement and quantum nonlocality)
	03.67.-a	(Quantum information)
	03.67.Hk	(Quantum communication)

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

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Zhao Rui-Tong (赵瑞通), Guo Qi (郭奇), Chen Li (陈丽), Wang Hong-Fu (王洪福), Zhang Shou (张寿) Quantum superdense coding based on hyperentanglement 2012 Chin. Phys. B 21 080303

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