Implementing concentration of unknown atomic entangled states via cavity decay;

Teleportation of an unknown 2-particle entangled state;

Preparation of entangled W state via resonant interaction of V-type three-level atoms and two-mode cavity-field;

Teleportation of a three-particle entangled W state through two-particle entangled quantum channels;

A new protocol of quantum secret sharing for single qubit through an entangled W state is proposed.

Considers the problem of deleting of bipartite orthogonal maximal entanglement states and deleting of quant.

By the technology of cavity quantum electrodynamics,purifying the non-maximally entanglement state on cavity quantum electrodynamics is purified,the teleportation probability is realized.

Time evolution of two-atom entanglement and thermal entanglement in a generalized Jaynes-Cummings model;

Concurrence was adopted to investigate the thermal entanglement produced by resonant multi-photon Jaynes-Cummings model with atomic motion.

The thermal entanglement of a two-qubit Heisenberg XYZ model under a uniform external magnetic field is analyzed,and the influences for the concurrence of the isotropic XY and XXZ models which are special cases of the anisotropic Heisenberg XXZ model in terms of the uniform external magnetic are discussed.