We use periodically poled crystal PPKTP to generate squeezing and entanglement in continuous variable field. We utilize the squeezed light and multipartite entanglement to investigate continuous variable quantum communication and information.

The hybrid potential well of electric field and light field is used to capture the electric field and light field at the same time, and the vibration amplitude of the ball is reduced to a small extent by feedback cooling, so as to study the interface between quantum mechanics and general relativity.

We obtain ⁴⁰K Fermi degeneracy by evaporatively cooling Bosonic ⁸⁷Rb.  Now we are devoting to  study  the behaviour of quantum degenerate Fermi  gas and Bose-Fermi mixture gas.