Generation of Entangled Coherent States

Xu‐Bo Zou, Wolfgang M. Mathis

Jie‐Qiao Liao

The authors of this paper propose an optical scheme for the generation of entangled coherent states which include the multi-mode and high-dimensional entangled coherent states.The scheme is based on the interaction of nonlinear Kerr medium and optical fields.The authors find that muliti-mode and high-dimensional entangled coherent states can be generated through proper selections of the fields′ initial states,the time of the interaction and the generalized bell measurement.The authors also find that the interaction of nonlinear Kerr media can generate entanglement when the states of input modes are prepared in coherent state and superposed Fock states.

HE Dai-Luo, Yuli Dong, Fang Jian-Xin +2 more

Qin-Qin Wu, Lan Xu

Hu Jie

A scheme of generating the Bell-type and cluster-type entangled coherent states(ECSs) via a single two-level atom and cavity modes initially prepared in coherent states is proposed.Discussions on the two ECSs are presented.When the atom interacts separately with two Ramsey zones and two cavity modes,the generation of Bell-type ECSs in separate cavities is realized after an atomic measurement.By adding the Ramsey zones and cavity modes,the cluster-type ECSs can be generated.The interaction time between the atom and cavity modes are allπ/2λ,where A is the effective atom-cavity coupling constant. At last the experimental feasibility of such proposal is discussed.

Amir Karimi, Mohammad Kazem Tavassoly

Recently, the entangled nonlinear coherent states are introduced via replacing coherent states with nonlinear coherent states in entangled coherent states. In this paper, in order to generate the SU(1,1) and SU(2) entangled nonlinear coherent states, an appropriate scheme is presented. The scheme is based on the resonant interaction of a  -type three-level atom with the two cavity modes of a quantized field in the presence of two strong classical fields.