Implementing concentration of unknown atomic entangled states via cavity decay;

Teleportation of an unknown 2-particle entangled state;

Transferring atomic entangled states with a nonresonant atom-field interaction;

Basing on the local distinguishing princip le, we propose a scheme of QKD through the symmetric noisy quantum channel that can get secret keys without errors as using the maximally entangled states (the four Bell states) through pure quantum channel.

We review the history of quantum entangled states and the main advances in the measure of entanglement, the distinguishing of entangled states from separable states and the classification of entangled states.

Entanglement in the Heisenberg XY Model;

A scheme was proposed which can execute the entanglement of four particles from the entanglement of three particles by polarization beam splitter.

Quantum entanglement, as a physical resource, lies at the heart of quantum computation, quantum communication, quantum teleportation, and quantum superdense-coding.

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.

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.

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.