Abstract The problem of sending a single classical bit through a generalized amplitude damping channel is considered. When two transmissions through the channel are available as a resource, we find that two entangled transmissions can enhance the capability of receiver's judging information correctly under certain conditions compared with two product-state transmissions. In addition, we find a special case in which the two entangled transmissions can always make a classical bit more effectively disable the noise influence.
Received: 22 April 2006
Revised: 31 August 2006
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10374025), the
Natural Science Foundation of Hunan Normal University (Grant No
22040640) and the Natural Science Foundation of Hunan Province (Grant No 03jjy3012).
Cite this article:
Hou Li-Zhen(侯丽珍) and Fang Mao-Fa(方卯发) Entanglement-enhanced classical communication through generalized amplitude damping channel 2007 Chinese Physics 16 318
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