Preparation of hybrid entangled states and entangled coherent states for a single trapped ion in a cavity
Jie‐Qiao Liao, Yu Guo, Hao‐Sheng Zeng, Le‐Man Kuang · Journal of Physics B Atomic Molecular and Optical Physics · 2006
In this paper, we study generation of entangled states in a system which consists of a single trapped ion in a cavity. We obtain a cross-Kerr-like interaction between the cavity field (photons) and the centre-of-mass motion (phonons) of the trapped ion in the Lamb–Dicke and large detuning regime. Based on this cross-Kerr-like interaction, we create hybrid entangled states between the phonon mode and the ionic internal states, and between the cavity field and ionic internal states, respectively. We also show that it is possible to prepare entangled coherent states between the cavity field and the phonon mode. We explicitly obtain an entangled state between two pairs of Schrödinger-cat states.