摘要
This paper proposes an experimentally feasible scheme for implementing quantum dense coding of trapped-ion system in decoherence-free states. As the phase changes due to time evolution of components with different eigenenergies of quantum superposition are completely frozen, quantum dense coding based on this model would be perfect. The scheme is insensitive to heating of vibrational mode and Bell states can be exactly distinguished via detecting the ionic state.
This paper proposes an experimentally feasible scheme for implementing quantum dense coding of trapped-ion system in decoherence-free states. As the phase changes due to time evolution of components with different eigenenergies of quantum superposition are completely frozen, quantum dense coding based on this model would be perfect. The scheme is insensitive to heating of vibrational mode and Bell states can be exactly distinguished via detecting the ionic state.
基金
Project supported by the Important Program of Hunan Provincial Education Department (Grant No 06A038)
Department of Education of Hunan Province (Grant No 06C080)
Hunan Provincial Natural Science Foundation,China (Grant No 06JJ4003)
作者简介
Corresponding author. E-mail： xiaojuan_11@sohu.com
