Generating Multi-particle Entangled State with Matter-Wave Interferometer

We put forward a realizable scheme for generating multi-particle entangled state with matter-wave interferometer, where the entangled properties are characterized by spin squeezing parameter and the reciprocal of the mean quantum Fisher information per particle (RMQFIP). The multi-particle entangled state can be generated by adjusting phase difference between two input ports of the interferometer and the better entanglement can be achieved by increasing the number of the total particles.