Bose-Einstein Condensation In The Two Dimensional Optical Lattice

The technique of optical lattice is one of important control methods in the field of cold atomic physics,we can achieve one dimensional bose gases by loading BEC into the two dimensional optical lattice.Firstly,we introduced the theories of laser cooling and Bose-Einstein condensation.Secondly,we described the optical system of two dimen-sional optical lattice which we have build,we also introduced the method which we used to calibrate our optical setup and how we measure the depth of optical lattice.Finaly,we introduced our work about adiabatic passage,we can transfer atom between different submagnetic state by linear sweep the frequency of rf field.