Scheme for implementing quantum dense coding with four-particle decoherence-free states in an ion trap
Zheng Xiao-Juan, Cao Shuai, Mao-Fa Fang, Xiang-Ping Liao · Chinese Physics B · 2008
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.